Louis Dionne 45c935bd0b [libc++] Purge mentions of GCC 4 from the test suite
We don't support GCC 4 and older according to the documentation, so
we should pretend it doesn't exist.

This is a re-application of r372787.

llvm-svn: 372916
2019-09-25 19:40:48 +00:00
..
2019-02-04 20:31:13 +00:00