fix for jenkins-bug #JENKINS-17058

modified unit-test for resolving relative paths;
updated pom - integrate plugin-API for Jenkins1.510 and adapt for
Eclipse m2e
Create README.md
fix for jenkins-bug #JENKINS-17058

overriding method readResolve() from base-class BPHostConfiguration for
resoving Reflection-problems with XStream
fix for jenkins-bug #JENKINS-17165

exchange the version of JUnit to 4.9 (the same like in the other
modules)
Update to the latest LTS
Fix README.md for main repo
[maven-release-plugin] prepare release publish-over-0.18
[maven-release-plugin] prepare for next development iteration