Add protobuf (Google 'Protocol Buffers')

2.4.0a is required for Hadoop.
2.5.0 is the latest version.
Initial attempt at Maven eb.
Add Ant for Java 1.7.0_40.
Use a property to get through input.

This is more reliable than the tricky run_cmd_qa.
Skip tests for maven using -D.

Surefire sparns too many threads for our shared environment so we will be naughty and skip tests. As EasyBuild is intended for building and installing released software, the value of the tests is questionable.
Merge branch 'maven'

Conflicts:
	easybuild/easyconfigs/p/protobuf/protobuf-2.4.0a-goolf-1.4.10.eb
	easybuild/easyconfigs/p/protobuf/protobuf-2.5.0-goolf-1.4.10.eb