New module 'wcsncpy'.

* modules/wcsncpy: New file.
* lib/wchar.in.h (wcsncpy): New declaration.
* lib/wcsncpy.c: New file.
* lib/wcsncpy-impl.h: New file, from libutf8 with modifications.
* m4/wcsncpy.m4: New file.
* m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsncpy is declared.
(gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSNCPY, HAVE_WCSNCPY.
* modules/wchar (Makefile.am): Substitute GNULIB_WCSNCPY, HAVE_WCSNCPY.
* tests/test-wchar-c++.cc: Test the declaration of wcsncpy.
* doc/posix-functions/wcsncpy.texi: Mention the new module.

modules/wcsncpy

@@ -0,0 +1,31 @@
+Description:
+wcsncpy() function: copy a size-bounded wide string.
+
+Status:
+obsolete
+
+Notice:
+This module is obsolete.
+
+Files:
+lib/wcsncpy.c
+lib/wcsncpy-impl.h
+m4/wcsncpy.m4
+
+Depends-on:
+wchar
+
+configure.ac:
+gl_FUNC_WCSNCPY
+gl_WCHAR_MODULE_INDICATOR([wcsncpy])
+
+Makefile.am:
+
+Include:
+<wchar.h>
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible