misc.c (gnat_expand_constant): Move declaration above definition of lang_hooks.
* misc.c (gnat_expand_constant): Move declaration above
definition of lang_hooks.
(LANG_HOOKS_EXPAND_CONSTANT): Set to gnat_expand_constant.
(gnat_init): lang_expand_constant no longer exists.
(internal_error_function): Remove #ifdef HAVE_VPRINTF. We
always have vprintf.
(gnat_init): Always call set_internal_error_function.