v0.8.0-RC2: Revert "Enforcing java-6 for now"

Commits and the issues they fixed since v0.8.0-RC1

Issue(s)	Commit	Message
	062af53	fix import Conflicts:
	00e870b	fix test
	6a7a131	fix windows batch argument probrem. the shift command of cmd.exe is not shift

Pull requests since v0.8.0-RC1

Pull Request(s)	Commit	Message
#393	-	fix windows batch argument probrem
#390	-	Setting maintainer for Docker images can be optional.

A big thank you to all the contributors!

#	Author
6	nazoking
3	Nepomuk Seiler
1	Gary Coady