C99 ld configury
* configure.ac: Move initfini-array arg handling earlier. Don't
check for string.h, strings.h, stdlib.h, or locale.h. Do check
for inttypes.h, stdint.h, sys/types.h. Don't check for
setlocale, free, getev or strstr.
(AC_ISC_POSIX): Don't invoke.
* sysdep.h: Include string.h and stdlib.h unconditionally. Test
HAVE_SYS_TYPE_H and HAVE_SYS_STAT_H. Remove strstr, free and
getenv fallback declarations.
* ld.h: Don't test HAVE_LOCALE_H.
* ldmain.c: Don't test HAVE_SETLOCALE.
* config.in: Regenerate.
* configure: Regenerate.