more bustage fixes for Mac OS X 10.4 "Tiger" build patch, by Mark Mentovai. b=292530

embedding/components/printingui/src/mac/printpde/Makefile.in

@@ -47,7 +47,7 @@ else
 BUILDSTYLE	= Deployment
 endif
 
-ifeq (,$(findstring pbxbuild,$(XCODEBUILD)))
+ifeq (,$(findstring pbxbuild,$(PBBUILD)))
     # pbbuild or xcodebuild indicates Xcode; the Xcode project contains
     # native targets needed for proper SDK builds.
     PROJECT=PrintPDE.xcode

modules/plugin/samples/default/mac/Makefile.in

@@ -54,7 +54,7 @@ BUILDSTYLE	= Deployment
 endif
 endif
 
-ifeq (,$(findstring pbxbuild,$(XCODEBUILD)))
+ifeq (,$(findstring pbxbuild,$(PBBUILD)))
     # pbbuild or xcodebuild indicates Xcode; the Xcode project contains
     # native targets needed for proper SDK builds.
     PROJECT=DefaultPlugin.xcode