source windows: backport disabling WIN32_LEAN_AND_MEAN patch

It causes build error on MariaDB bundled build on Windows.

packages/source/Makefile.am

@@ -103,8 +103,9 @@ files/$(MARIADB_WITH_MROONGA_BASE).tar.gz: tmp/$(MARIADB_WITH_MROONGA_BASE).stam
 	mkdir -p files/
 	(cd tmp && tar czf ../$@ $(MARIADB_WITH_MROONGA_BASE))
 
-PATCHES =						\
-	patches/mariadb-10.0.3-windows-build.diff
+PATCHES =								\
+	patches/mariadb-10.0.3-windows-build.diff			\
+	patches/groonga-5.0.7-windows-mariadb-bundled-build.diff
 
 tmp/$(MARIADB_WITH_MROONGA_FOR_WINDOWS_BASE).stamp: tmp/$(MARIADB_WITH_MROONGA_BASE).stamp $(PATCHES)
 	rm -rf tmp/$(MARIADB_WITH_MROONGA_FOR_WINDOWS_BASE)

packages/source/patches/groonga-5.0.7-windows-mariadb-bundled-build.diff

@@ -0,0 +1,14 @@
+diff -ru mariadb-10.0.21-with-mroonga-5.06.orig/storage/mroonga/vendor/groonga/lib/grn.h mariadb-10.0.21-with-mroonga-5.06/storage/mroonga/vendor/groonga/lib/grn.h
+--- mariadb-10.0.21-with-mroonga-5.06.orig/storage/mroonga/vendor/groonga/lib/grn.h	2015-08-13 18:15:38.000000000 +0900
++++ mariadb-10.0.21-with-mroonga-5.06/storage/mroonga/vendor/groonga/lib/grn.h	2015-08-31 17:13:59.251028024 +0900
+@@ -47,6 +47,10 @@
+ #  undef NTDDI_VERSION
+ # endif /* NTDDI_VERSION */
+ # define NTDDI_VERSION GRN_MINIMUM_WINDOWS_VERSION
++
++# ifdef WIN32_LEAN_AND_MEAN
++#  undef WIN32_LEAN_AND_MEAN
++# endif /* WIN32_LEAN_AND_MEAN */
+ #endif /* WIN32 */
+
+ #ifdef __cplusplus