* Makefile.in (C_SWITCH_SITE, LD_SWITCH_SITE): Remove, unused.
Remove all references.
(temacs): Add GNUStep specific ld flags.
* Makefile.in (ALL_CFLAGS): Remove reference to C_SWITCH_SITE.
* config.nt (C_SWITCH_SITE, LD_SWITCH_SITE): Do not undefine.
* Makefile.in (ALL_CFLAGS): Remove reference to C_SWITCH_SITE.
* configure.in (LD_SWITCH_SITE): Remove, set the values directly
in src/Makefile.in.
(static): Remove, autoconf would always comment it out anyway.
(subprocesses): Define unconditionally.