add missing return values in safeRequestAnimationFrame,safeSetTimeout,safeSetInterval
Merge branch 'incoming'
Merge branch 'incoming'
Add IN6_IS_ADDR_* macros and other IPv6 stuff.
Make AF_UNIX and AF_INET different.

GNUnet contains a switch with cases for AF_UNIX and AF_INET.
Fix prototypes for stat64, fstat64, lstat64.
Add some IPv6 stuff to netinet/in.h.
Move initgroups outside of !_XOPEN_SOURCE.

It was put into newlib grp.h revision 1.2 by Edward M. Lee,
but every other system's grp.h I looked at doesn't do this.
Define SA_RESTART.
Define timezone.
Merge branch 'incoming'
deprecate llvm opts in non-ta2 modes
make EMCC_OPTIMIZE_NORMALLY the default
1.5.2
update tests
optimize libc and other libraries with -O2
emit sanity file even in forced sanity checks, when it actually failed
update tests
fix bug when optimizing renamed input files in emcc
Add a 'contains' helper function.