Merge GDB 7.5.1

gdb/gnulib/import/m4/codeset.m4

Index: gdb/gnulib/import/m4/codeset.m4
diff --git a/gdb/gnulib/import/m4/codeset.m4 b/gdb/gnulib/import/m4/codeset.m4
new file mode 100644
index 0000000000000000000000000000000000000000..cf53d2416718889d8ffe8172fcb21cf62cca803e
--- /dev/null
+++ b/gdb/gnulib/import/m4/codeset.m4
@@ -0,0 +1,23 @@
+# codeset.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2000-2002, 2006, 2008-2012 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_LANGINFO_CODESET],
+[
+  AC_CACHE_CHECK([for nl_langinfo and CODESET], [am_cv_langinfo_codeset],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <langinfo.h>]],
+          [[char* cs = nl_langinfo(CODESET); return !cs;]])],
+       [am_cv_langinfo_codeset=yes],
+       [am_cv_langinfo_codeset=no])
+    ])
+  if test $am_cv_langinfo_codeset = yes; then
+    AC_DEFINE([HAVE_LANGINFO_CODESET], [1],
+      [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+  fi
+])