* s/darwin.h (OTHER_FILES): Do not define here, defined in

* s/darwin.h (OTHER_FILES): Do not define here, defined in
config.in.

* Makefile.in (ALL_OBJC_CFLAGS): New variable.
(.m.o): Use it.
* config.in: Regenerate.

* Makefile.in (INSTALLABLES): Add LIB_SRC_EXTRA_INSTALLABLES.  Do
not special case for NS_IMPL_COCOA.

* configure.in (LIB_SRC_EXTRA_INSTALLABLES): New variable.
AC_SUBST it.
(GNU_OBJC_CFLAGS): Define as a shell variable instead of #define.
AC_SUBST it.
(OTHER_FILES): Always define for HAVE_NS.
(C_SWITCH_X_SYSTEM): Don't define as empty for NS_IMPL_COCOA.
* configure: Regenerate.