Merge pull request #329 from bocoup/unicode-escape-identifiers

test/language/expressions/object/property-name-yield.js

test/language/identifiers/S7.6_A1.2_T3.js

test/language/identifiers/S7.6_A1.3_T3.js

test/language/identifiers/S7.6_A2.1_T1.js

test/language/identifiers/S7.6_A2.1_T2.js

test/language/identifiers/S7.6_A2.1_T3.js

test/language/identifiers/S7.6_A2.1_T4.js

test/language/identifiers/part-digits-via-escape-hex.js

test/language/identifiers/part-digits-via-escape-hex4.js

test/language/identifiers/part-digits.js

test/language/identifiers/start-dollar-sign.js

test/language/identifiers/start-escape-seq.js

test/language/identifiers/start-underscore.js

test/language/identifiers/start-unicode-ltr.js

test/language/identifiers/val-break-via-escape-hex.js

test/language/identifiers/val-break-via-escape-hex4.js

test/language/identifiers/val-break.js

test/language/identifiers/val-case-via-escape-hex.js

test/language/identifiers/val-case-via-escape-hex4.js

test/language/identifiers/val-case.js