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

cfg.mk

@@ -39,9 +39,6 @@ url_dir_list = \
 local-checks-to-skip = \
   changelog-check \
   sc_immutable_NEWS			\
-  sc_bindtextdomain			\
-  sc_program_name			\
-  sc_prohibit_HAVE_MBRTOWC		\
   sc_prohibit_always-defined_macros	\
   sc_prohibit_always_true_header_tests	\
   sc_prohibit_atoi_atof			\
@@ -62,9 +59,13 @@ update-copyright: update-b4-copyright update-package-copyright-year
 update-copyright-env = \
   UPDATE_COPYRIGHT_FORCE=1 UPDATE_COPYRIGHT_USE_INTERVALS=1
 
-exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF = ^src/parse-gram.[ch]$$
-exclude_file_name_regexp--sc_require_config_h_first = \
-  ^(lib/yyerror|data/(glr|yacc))\.c$$
-exclude_file_name_regexp--sc_space_tab = ^tests/(input|c\+\+)\.at$$
-exclude_file_name_regexp--sc_trailing_blank = ^src/parse-gram.[ch]$$
-exclude_file_name_regexp--sc_unmarked_diagnostics = ^djgpp/
+exclude = $(foreach a,$(1),$(eval exclude_file_name_regexp--sc_$(a)))
+$(call exclude,							\
+  bindtextdomain=^lib/main.c$$					\
+  program_name=^lib/main.c$$					\
+  prohibit_empty_lines_at_EOF=^src/parse-gram.[ch]$$		\
+  require_config_h_first=^(lib/yyerror|data/(glr|yacc))\.c$$	\
+  space_tab=^tests/(input|c\+\+)\.at$$				\
+  trailing_blank=^src/parse-gram.[ch]$$				\
+  unmarked_diagnostics=^djgpp/					\
+)