JPackage utilities

Utilities for the JPackage Project <http://www.jpackage.org/>:

* /usr/bin/build-classpath
build the Java classpath in a portable manner
* /usr/bin/build-jar-repository
build a jar repository in a portable manner
* /usr/bin/rebuild-jar-repository
rebuild a jar repository in a portable manner
(after a jvm change...)
* /usr/bin/build-classpath-directory
build the Java classpath from a directory
* /usr/bin/diff-jars
show jar content differences
* /usr/bin/jvmjar
install jvm extensions
* /usr/bin/create-jar-links
create custom jar links
* /usr/bin/clean-binary-files
remove binary files from sources
* /usr/bin/check-binary-files
check for presence of unexpected binary files
* /usr/share/java-utils/ja