* tsystem.h: Test only POSIX for availability of string.h
and time.h.
* config.gcc (all systems): If USG appeared in xm_defines,
change it to POSIX. If both USG and POSIX appeared, just
delete USG. Remove unnecessary quotes around xm_defines
settings.
(m68k-crds-unos*): Don't #define unos - tested nowhere.
(m68k-apple-aux*): Don't #define AUX - tested nowhere.
(alpha*-*-linux*ecoff*, powerpc-*-linux*libc1,
powerpc-*-linux*): No need to set xm_defines - handled by
global settings for *-*-linux*.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@41714
138bc75d-0d04-0410-961f-
82ee72b054a4