OSGi metadata generation

This works on a SNAPSHOT version of the Apache Felix Maven Bundle plugin, due to issues with bnd and
post Java 7 class files.
OSGi metadata to require JavaSE-1.7
Felix Maven Bundle plugin 2.4.0 is now public
Support a size() method on arrays

The justification is for arrays / Java collections interoperability.
Merge pull request #47 from jponge/wip/osgi-metadata

OSGi metadata generation
Merge branch 'master' into wip/dynamic-evaluation