Invoke expr-binary with -- to avoid parameters getting interpeted as
options to expr itself.
Merge pull request #43 from josteink/master

Fix FreeBSD compatibility issue with expr
Fix problems with jvm-paths containing spaces.
Merge pull request #45 from josteink/master

Fix open issue #39 with whitespace in JVM path.
Add a java version of /bin/cat to test against
#50 - compile drip to be compatible with java 5 and up