avoid Wundef in netscape plugins headers

Change-Id: I23f65de88a3c33f0820ce16d8b7836739fb83ce9

np_sdk/mozsrc/jri_md.h

@@ -119,7 +119,7 @@ extern "C" {
 #   endif
 
 /* Mac */
-#elif defined (macintosh) || Macintosh || THINK_C
+#elif defined (macintosh) || defined(Macintosh) || defined(THINK_C)
 #   if defined(__MWERKS__)              /* Metrowerks */
 #       if !__option(enumsalwaysint)
 #           error You need to define 'Enums Always Int' for your project.

np_sdk/mozsrc/npupp.h

@@ -66,6 +66,10 @@
 
 /* NPP_Initialize */
 
+#ifndef TARGET_RT_MAC_CFM
+#define TARGET_RT_MAC_CFM 0
+#endif
+
 #define _NPUPP_USE_UPP_ (TARGET_RT_MAC_CFM && !TARGET_API_MAC_CARBON)
 
 #if _NPUPP_USE_UPP_