VS2013: Adjust cppunit to 12.0 vcproj version

Change-Id: I9223fc0620bf31389ab4ea0971835dd7a27feb7e
Reviewed-on: https://gerrit.libreoffice.org/10159Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>

external/cppunit/ExternalProject_cppunit.mk

@@ -17,8 +17,9 @@ ifeq ($(OS)$(COM),WNTMSC)
 $(call gb_ExternalProject_get_state_target,cppunit,build) :
 	$(call gb_ExternalProject_run,build,\
 	    PROFILEFLAGS="$(if $(MSVC_USE_DEBUG_RUNTIME),Debug,Release) \
-			$(if $(filter 110 120,$(VCVER)),/p:PlatformToolset=$(if $(filter 80,$(WINDOWS_SDK_VERSION)),v110,v110_xp) \
-				/p:VisualStudioVersion=11.0)" \
+			$(if $(filter 110,$(VCVER)),/p:PlatformToolset=$(if $(filter 80,$(WINDOWS_SDK_VERSION)),v110,v110_xp) \
+				/p:VisualStudioVersion=11.0) \
+			$(if $(filter 120,$(VCVER)),/p:PlatformToolset=v120 /p:VisualStudioVersion=12.0)" \
 		&& msbuild.exe cppunit_dll.vcxproj /p:Configuration=$${PROFILEFLAGS}  \
 		&& cd ../DllPlugInTester \
 		&& msbuild.exe DllPlugInTester.vcxproj /p:Configuration=$${PROFILEFLAGS} \