No ticket. Restore some parsing tests in core. (cherry-picked from 650f325d8e5e9092cd8ca7c1a7ab62c4bba582cf)
Grunt: put .sizecache.json in build/, not dist/. (see 6095be1260c5c0e7dfe88380501188d4c50975eb)
Fix #14415. Remove the source map comment in the release script. Close gh-1424. (cherry-picked from 562145e887cc42ce8c9c9cd2c6e946ff01e6731d)
No ticket. Remove the pre-uglify task form build/tasks/build.js. Fix custom builds. (cherry-picked from 7d5a12376d18e0ec70241e653721ce9977123d34)
No ticket. Remove version sniffing from test/unit/support.js, browsers got updated.
Fix #14503: Cast to string before setting XHR header