V8 ran into an issue where the YAML parser our test setup is using
didn't understand the newline, and failed to parser the negative
test expectation below, causing the test to fail. This patch fixes
the issue.

- Add missing 'negative: ReferenceError' in S7.9_A5.7_T1
- Remove stale 'negative: ReferenceError' in block-local-closure-get-before-initialization
- Remove all tail-call expressions in test/built-ins/Function
- And update code in test/built-ins/Function to simply use 'f()' instead of 'var r = f(); return r'

Fixes #383

The `negative` frontmatter tag expresses an expectation for the behavior
of the test file as a whole. The `assert.throws` helper function offers
more fine-grained control over expectations because it may be applied to
specific statements and expressions. This makes it preferable in cases
where it may be used (i.e. when the test body does not describe a syntax
error or early error).

Re-implement assertions for errors to use the `assert.throws` helper
function wherever possible.

pilot directory for replacing flags: [negative] with
negative: errorname

ch07-7.2,7.3: add error names
ch07-rest: insert error names rest of ch07
ch08: add expected error name
ch11: add error name to negative
ch12: put error name in negative

ch13: add error name to negative
only one test, did it manually

ch15: add error name to negative:

ch07: add error name to negative

these tests used flags: \n - negative and so
were not caught by the earlier naive grep for flags: [negative]

--- changes suggested by @anba

bestPractice - remove added NotEarlyError
ch07,ch11 - expect ReferenceError (req'd by ES6)
correct test descriptions to expect ReferenceError only
enforce parsing as block statement by adding `;`
remove needless include of $FAIL.js

effectively, a rebase of all changes onto master

    Merge branch 'negative-addErrorName-work' into negative-addErrorName-bestPractice

    Merge branch 'saved-bestPractice-negative' into negative-addErrorName-work

    Conflicts:
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
    	test/suite/ch12/12.1/S12.1_A4_T1.js
    	test/suite/ch12/12.5/S12.5_A2.js

    incorporate changes made on PR branch

    re-remove added NotEarlyError

    Merge branch 'negative-addErrorName-work' into negative-addErrorName-bestPractice

    Conflicts:
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
    	test/suite/ch12/12.1/S12.1_A4_T1.js
    	test/suite/ch12/12.5/S12.5_A2.js

    ch15: correct negative regexes

    ch10: avoid use of not-NotEarlyError regex

    ch14 error regexps

    ch13 error regexps

    ch12: negative error matching

    Merge branch 'console-runner-checkError' into negative-addErrorName-work

    test262.py: check negative tests with regex

    implement checking of negative tests =>

    negative: SyntaxError

    means that /SyntaxError/ must match stderr
    or test is reported as failure

    Fixes #78

    expect real errors

    bestPractice: supply error names to negative

    pilot directory for replacing flags: [negative] with
    negative: errorname

    ch07-7.2,7.3: add error names
    ch07-rest: insert error names rest of ch07
    ch08: add expected error name
    ch11: add error name to negative
    ch12: put error name in negative

    ch13: add error name to negative
    only one test, did it manually

    ch15: add error name to negative:

    ch07: add error name to negative

    these tests used flags: \n - negative and so
    were not caught by the earlier naive grep for flags: [negative]

    --- changes suggested by @anba

    bestPractice - remove added NotEarlyError
    ch07,ch11 - expect ReferenceError (req'd by ES6)
    correct test descriptions to expect ReferenceError only
    enforce parsing as block statement by adding `;`
    remove needless include of $FAIL.js

    Merge branch 'negative-addErrorName-work' into negative-addErrorName-bestPractice

    resolved Conflicts:
    	test/suite/ch07/7.9/S7.9_A5.7_T1.js
    	test/suite/ch11/11.13/11.13.1/S11.13.1_A2.1_T3.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T1.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T10.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T11.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T3.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T4.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T5.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T7.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T8.js
    	test/suite/ch11/11.13/11.13.2/S11.13.2_A2.2_T9.js
    	test/suite/ch11/11.3/11.3.1/S11.3.1_A2.1_T3.js
    	test/suite/ch11/11.3/11.3.2/S11.3.2_A2.1_T3.js
    	test/suite/ch11/11.4/11.4.4/S11.4.4_A2.1_T3.js
    	test/suite/ch11/11.4/11.4.5/S11.4.5_A2.1_T3.js
    	test/suite/ch12/12.5/S12.5_A2.js
    	test/suite/ch12/12.6/12.6.3/S12.6.3_A4_T2.js

    negative: second half of @anba notes

    correct test descriptions to expect ReferenceError only
    enforce parse as block statement by adding `;`
    remove needless include of $FAIL.js

    ch12: specify type

    negative: @anba fixes

    bestPractice - remove added NotEarlyError
    ch07,ch11 - expect ReferenceError (req'd by ES6)

    bestPractice: supply error names to negative

    pilot directory for replacing flags: [negative] with
    negative: errorname

    ch07-7.2,7.3: add error names
    ch07-rest: insert error names rest of ch07
    ch08: add expected error name
    ch11: add error name to negative
    ch12: put error name in negative

    ch13: add error name to negative
    only one test, did it manually

    ch15: add error name to negative:

    ch07: add error name to negative

    these tests used flags: \n - negative and so
    were not caught by the earlier naive grep for flags: [negative]

    expect a SyntaxError

    ch07: add error name to negative

    these tests used flags: \n - negative and so
    were not caught by the earlier naive grep for flags: [negative]

    ch15: add error name to negative:

    ch13: add error name to negative

    only one test, did it manually

    ch12: put error name in negative

    ch11: add error name to negative

    ch08: add expected error name
    ch07-rest: insert error names rest of ch07

    ch07-7.2,7.3: add error names

    negative-errorname: pilot

    pilot directory for replacing flags: [negative] with
    negative: errorname

    bestPractice: supply error names to negative

bestPractice: supply error names to negative

pilot directory for replacing flags: [negative] with
negative: errorname

ch07-7.2,7.3: add error names
ch07-rest: insert error names rest of ch07
ch08: add expected error name
ch11: add error name to negative
ch12: put error name in negative

ch13: add error name to negative
only one test, did it manually

ch15: add error name to negative:

ch07: add error name to negative

these tests used flags: \n - negative and so
were not caught by the earlier naive grep for flags: [negative]

bestPractice: supply error names to negative

negative-errorname: pilot

pilot directory for replacing flags: [negative] with
negative: errorname

ch07-7.2,7.3: add error names

ch07-rest: insert error names rest of ch07

ch08: add expected error name

ch11: add error name to negative

ch12: put error name in negative

ch13: add error name to negative

only one test, did it manually

ch15: add error name to negative:

ch07: add error name to negative

these tests used flags: \n - negative and so
were not caught by the earlier naive grep for flags: [negative]

expect a SyntaxError

negative: @anba fixes

bestPractice - remove added NotEarlyError
ch07,ch11 - expect ReferenceError (req'd by ES6)

ch12: specify type

negative: second half of @anba notes

correct test descriptions to expect ReferenceError only
enforce parse as block statement by adding `;`
remove needless include of $FAIL.js

expect real errors

ch12: negative error matching

ch13 error regexps

ch14 error regexps

add "description" header back

remove now-unused includes

remove needless include

This commit normalizes the test case format used across test262. It applies the following transformations:

* Convert to YAML for frontmatter
* Remove of trailing whitespace
* Replace /r/n with /n except in chapters 6 and 7.
* Copyright header always uses // comments
* new includes attribute replaces $INCLUDE
* No implicit assumptions about test environment other than $ERROR. Everything else appears in the include array. This includes "runTestCase" which is now included in a substantial number of tests.

source starting NOW, to test/suite.

(between David Fugate and I) canonical test262 test format

applied to many fixed sources, corresponding to previous two commits

assertTrue became assertTruthy. Canonical form of doc-comment attribute value source no longer have a leading colon and trailing semicolon. Any existing such are stripped during conversion.