Add whitelist of supported link flags
Merge pull request #2381 from rsturgell/whitelist_link_flags

Whitelist supported link flags
leave bool&1 as is if not going straight into a bitwise operator, to work around v8 issue 2513
try to fix sourceRegex for IE
fix bug in setjmp limit testing; helps #2379
enable test_longjmp_repeat in fastcomp