8013785: Respect EXTRA_CFLAGS on windows

Reviewed-by: mgronlun, rbackman, kvn

make/windows/makefiles/compile.make

@@ -52,7 +52,7 @@ CXX=cl.exe
 # improving the quality of crash log stack traces involving jvm.dll.
 
 # These are always used in all compiles
-CXX_FLAGS=/nologo /W3 /WX
+CXX_FLAGS=$(EXTRA_CFLAGS) /nologo /W3 /WX
 
 # Let's add debug information when Full Debug Symbols is enabled
 !if "$(ENABLE_FULL_DEBUG_SYMBOLS)" == "1"

make/windows/makefiles/defs.make

@@ -193,7 +193,7 @@ ifdef COOKED_BUILD_NUMBER
   MAKE_ARGS += JDK_BUILD_NUMBER=$(COOKED_BUILD_NUMBER)
 endif
 
-NMAKE= MAKEFLAGS= MFLAGS= nmake -NOLOGO
+NMAKE= MAKEFLAGS= MFLAGS= EXTRA_CFLAGS="$(EXTRA_CFLAGS)" nmake -NOLOGO
 ifndef SYSTEM_UNAME
   SYSTEM_UNAME := $(shell uname)
   export SYSTEM_UNAME