Remove JDK dependency from pom.
Remove JDK dependency from pom.

The JDK version was explicitly provided in the list of dependencies.
This resulted in some serious compile time problems for Mac users
because of the manner in which Apple packages the JDK.

To alleviate this, the maven enforcer plugin was added which perfoms
these tests within the currently running JVM.

Additionally, the version of google collections was bumped up to
1.0-final.

Signed-off-by: Gary Pampara <46654e9f53f0e5c1be5f3914582d375e0aa2156c@gmail.com>

cirg-up/cilib