8058489: More adjustments of langtools/make/build.xml to modularized layout Summary: Re-structuring the langtools/make/build.xml to reflect the modular layout, cleanup of the build script Reviewed-by: jjg, mcimadamore, ksrini

^build/
^dist/
nbproject/private/
^webrev
^.hgtip
^.bridge2
.DS_Store