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/
^webrev
^testoutput/
/nbproject/private/
^make/netbeans/.*/build/
^make/netbeans/.*/dist/
^.hgtip
.DS_Store