Fix another potability issues about stdint.h and va_copy

Makefile.am

@@ -33,7 +33,9 @@ MAINTAINERCLEANFILES =			\
 	$(srcdir)/ltmain.sh		\
 	$(srcdir)/missing		\
 	$(srcdir)/mkinstalldirs		\
-	$(srcdir)/m4macros/*.m4		\
+	$(srcdir)/m4macros/gtk-doc.m4	\
+	$(srcdir)/m4macros/libtool.m4	\
+	$(srcdir)/m4macros/lt*.m4	\
 	`find "$(srcdir)" -type f -name Makefile.in -print`	\
 	$(NULL)
 DISTCLEANFILES =			\

configure.ac

@@ -200,12 +200,10 @@ AC_CHECK_ALIGNOF(void *)
 dnl ======================================================================
 dnl functions testing
 dnl ======================================================================
+AX_CREATE_STDINT_H([liblangtag/lt-stdint.h])
 AC_CHECK_HEADERS([dirent.h execinfo.h libgen.h sys/param.h])
-AC_CHECK_FUNCS([backtrace dlopen strndup va_copy __va_copy])
-
-if test "x$ac_cv_func_dlopen" != xyes; then
-	enable_modules=no
-fi
+AC_CHECK_FUNCS([backtrace dlopen strndup])
+AC_CHECK_VA_COPY
 
 dnl ======================================================================
 dnl gettext stuff

extensions/lt-ext-ldml-u.c

@@ -14,7 +14,8 @@
 #include "config.h"
 #endif
 
-#include <stdint.h>
+#include "lt-stdint.h"
+
 #include <string.h>
 #include <libxml/xpath.h>
 #include "lt-error.h"

liblangtag/Makefile.am

@@ -31,7 +31,9 @@ MAINTAINERCLEANFILES =				\
 	$(NULL)
 DISTCLEANFILES =				\
 	stamp-lt-config				\
+	stamp-lt-stdint				\
 	lt-config.h				\
+	lt-stdint.h				\
 	$(NULL)
 CLEANFILES =					\
 	xgen-h					\
@@ -42,6 +44,7 @@ BUILT_SOURCES =					\
 	$(liblangtag_built_private_headers)	\
 	$(liblangtag_built_sources)		\
 	stamp-lt-config				\
+	stamp-lt-stdint				\
 	$(NULL)
 
 ##
@@ -87,6 +90,7 @@ liblangtag_private_headers =			\
 	lt-redundant-private.h			\
 	lt-region-private.h			\
 	lt-script-private.h			\
+	lt-stdint.h				\
 	lt-tag-private.h			\
 	lt-trie.h				\
 	lt-utils.h				\
@@ -151,6 +155,11 @@ lt-localealias.h: @BUILD_LOCALEALIAS@ Makefile
 		echo "Failed to generate $@.";			\
 		exit 1;						\
 	fi
+stamp-lt-stdint: $(top_builddir)/config.status
+	$(AM_V_GEN) cd $(top_builddir) &&			\
+	$(SHELL) ./config.status liblangtag/lt-stdint.h
+	@touch $@
+	$(NULL)
 stamp-lt-config: $(top_builddir)/config.status
 	$(AM_V_GEN) cd $(top_builddir) &&			\
 	$(SHELL) ./config.status liblangtag/lt-config.h

liblangtag/lt-tag.c

@@ -14,9 +14,10 @@
 #include "config.h"
 #endif
 
+#include "lt-stdint.h"
+
 #include <ctype.h>
 #include <locale.h>
-#include <stdint.h>
 #include <string.h>
 #include <libxml/xpath.h>
 #include "lt-config.h"

liblangtag/lt-utils.c

@@ -132,7 +132,7 @@ lt_strdup_vprintf(const char *format,
 
 	lt_return_val_if_fail (format != NULL, NULL);
 
-	lt_va_copy(ap, args);
+	va_copy(ap, args);
 
 	size = vsnprintf(&c, 1, format, ap) + 1;
 

liblangtag/lt-utils.h

@@ -24,14 +24,6 @@
 
 LT_BEGIN_DECLS
 
-#if HAVE_VA_COPY
-#define lt_va_copy(_d_,_s_)	va_copy(_d_,_s_)
-#elsif HAVE___VA_COPY
-#define lt_va_copy(_d_,_s_)	__va_copy(_d_,_s_)
-#else
-#define lt_va_copy(_d_,_s_)	memcpy(&(_d_), &(_s_), sizeof (va_list))
-#endif
-
 int   lt_strcmp0       (const char *v1,
                         const char *v2);
 int   lt_strcasecmp    (const char *s1,