contrib: fix windows builds for gnulib

_set_invalid_parameter_handler is now usable in recent versions of mingw-w64

contrib/src/gettext/rules.mak

@@ -15,6 +15,7 @@ $(TARBALLS)/gettext-$(GETTEXT_VERSION).tar.gz:
 
 gettext: gettext-$(GETTEXT_VERSION).tar.gz .sum-gettext
 	$(UNPACK)
+	$(APPLY) $(SRC)/gettext/win32.patch
 	$(MOVE)
 
 DEPS_gettext = iconv $(DEPS_iconv)

contrib/src/gettext/win32.patch

+--- gettext/gettext-runtime/gnulib-lib/msvc-inval.c.orig	2013-07-02 17:44:02.000000000 +0200
++++ gettext/gettext-runtime/gnulib-lib/msvc-inval.c	2013-07-02 17:42:58.000000000 +0200
+@@ -28,7 +28,7 @@
+ 
+ # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+ 
+-static void cdecl
++static void __cdecl
+ gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                    const wchar_t *function,
+                                    const wchar_t *file,

contrib/src/gnutls/gnutls-win32.patch

@@ -26,3 +26,14 @@
  Libs.private: @LTLIBNETTLE@ @LTLIBZ@ @LTLIBINTL@ @LIBSOCKET@ @LTLIBPTHREAD@ @LTLIBICONV@ @P11_KIT_LIBS@ @LIB_SELECT@ @TSS_LIBS@ @LIB_CLOCK_GETTIME@
  @GNUTLS_REQUIRES_PRIVATE@
  Cflags: -I${includedir}
+--- gnutls/gl/msvc-inval.c.orig	2013-07-02 17:57:58.000000000 +0200
++++ gnutls/gl/msvc-inval.c	2013-07-02 17:58:05.000000000 +0200
+@@ -28,7 +28,7 @@
+ 
+ # if MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
+ 
+-static void cdecl
++static void __cdecl
+ gl_msvc_invalid_parameter_handler (const wchar_t *expression,
+                                    const wchar_t *function,
+                                    const wchar_t *file,