6718830: Hotspot fails to build with gcc 4.3 Summary: Fixed linux make file and couple adlc code to meet the changes of gcc 4.3 Reviewed-by: kamg, igor

6717128: Using relative path for ALT_OUTPUTDIR does not work properly Summary: import the absolute output directory when launching sub make process and avoid including defs.make in rules.make Reviewed-by: kamg, kvn