built-ins/Math/*: make all indentation consistent (depth & character) (#1435)

test/built-ins/Map/iterable-calls-set.js

test/built-ins/Map/iterator-close-after-set-failure.js

...t-ins/Map/iterator-items-are-not-object-close-iterator.js

test/built-ins/Map/iterator-items-are-not-object.js

...t-ins/Map/map-iterable-throws-when-set-is-not-callable.js

test/built-ins/Map/map-iterable.js

test/built-ins/Map/newtarget.js

test/built-ins/Map/prototype/clear/clear-map.js

test/built-ins/Map/prototype/clear/clear.js

...ilt-ins/Map/prototype/clear/map-data-list-is-preserved.js

test/built-ins/Map/prototype/clear/returns-undefined.js

test/built-ins/Map/prototype/delete/delete.js

...uilt-ins/Map/prototype/delete/does-not-break-iterators.js

test/built-ins/Map/prototype/delete/returns-false.js

...ns/Map/prototype/delete/returns-true-for-deleted-entry.js

test/built-ins/Math/abs/S15.8.2.1_A3.js

test/built-ins/Math/acosh/nan-returns.js

test/built-ins/Math/asinh/asinh-specialVals.js

test/built-ins/Math/atan2/S15.8.2.5_A1.js

test/built-ins/Math/atan2/S15.8.2.5_A16.js