RFR: JDK-8065914 Various improvements and cleanup of build system

Wed Nov 26 13:22:50 UTC 2014

This is another bunch of improvements from the preparatory work in the 
build-infra forest.

This fix includes:
    * Compare script improvements
    * Improvements of TextFileProcessing and RmiCompilation
    * Make install-file more robust
    * Better handling of top-level make on error and integration with 
external tools like bash completion.
    * Remove trailing whitespace
    * Various minor fixes

Bug: https://bugs.openjdk.java.net/browse/JDK-8065914
WebRev: 
http://cr.openjdk.java.net/~ihse/JDK-8065914-build-improvements/webrev.01

/Magnus