Turn on -Wsystem-headers by default, so that glitches in our headers
authorguenther <guenther@openbsd.org>
Mon, 26 Jul 2010 19:58:58 +0000 (19:58 +0000)
committerguenther <guenther@openbsd.org>
Mon, 26 Jul 2010 19:58:58 +0000 (19:58 +0000)
commit763c929c4e31b42c8124a241586a40d6045ff22f
tree6bbaa2353042961cc0eee3713df49ffc064d80a5
parentd0d2e8c86eb8afecbf16055435f26b914438769a
Turn on -Wsystem-headers by default, so that glitches in our headers
aren't silently ignored but rather get warned about and fixed.  Purely
stylistic warnings like -Wredundant-decls are your own problem however.

testing help from landry@, header fixes from kettenis@
ok deraadt@
gnu/gcc/gcc/common.opt
gnu/usr.bin/gcc/gcc/toplev.c