maint: address sc_bindtextdomain, sc_program_name and sc_prohibit_HAVE_MBRTOWC.

* bootstrap.conf (gnulib_modules): Require progname.
	* src/complain.c, src/getargs.c, src/getargs.h, src/main.c: Use it.
	* cfg.mk (exclude): New.
	Use it.
	Skip lib/main.c for bindtextdomain and set_program_name.
(cherry picked from commit 4d699f44e6)

Conflicts:

	cfg.mk

src/complain.c

@@ -23,6 +23,7 @@
 #include "system.h"
 
 #include <stdarg.h>
+#include <progname.h>
 
 #include "complain.h"
 #include "files.h"

src/getargs.c

@@ -40,6 +40,8 @@
 # undef HACK_FOR___GNU_LIBRARY___PROTOTYPE
 #endif
 
+#include <progname.h>
+
 #include "complain.h"
 #include "files.h"
 #include "getargs.h"
@@ -79,8 +81,6 @@ int language_prio = default_prio;
 struct bison_language const *language = &valid_languages[0];
 const char *include = NULL;
 
-char *program_name;
-
 
 /** Decode an option's set of keys.
  *

src/getargs.h

@@ -23,7 +23,6 @@
 
 #include "location.h"
 
-extern char *program_name;
 enum { command_line_prio, grammar_prio, default_prio };
 
 /* flags set by % directives */

src/main.c

@@ -24,6 +24,7 @@
 #include <bitset_stats.h>
 #include <bitset.h>
 #include <configmake.h>
+#include <progname.h>
 #include <quotearg.h>
 #include <timevar.h>
 
@@ -57,7 +58,7 @@
 int
 main (int argc, char *argv[])
 {
-  program_name = argv[0];
+  set_program_name (argv[0]);
   setlocale (LC_ALL, "");
   (void) bindtextdomain (PACKAGE, LOCALEDIR);
   (void) bindtextdomain ("bison-runtime", LOCALEDIR);