ISP-648 First draft of an opower-parent POM;  

This version centralizes common maven plugin dependency setup and versioning (especially around the Java compiler behavior)

It leaves out surefire configuration and checkstyle configuration because Archmage and $R/pose-parent are pretty far apart on those right now
It centralizes (perhaps unnecessarily) our build resources which include the fact we often autopatch databases off db/patches directories
Finally, it institues a profile that will switch the java compiler version based on the compile-time discovery of the JDK - this is a crutch I'll tear down after we switch 100% over to Java 7

PULL REQUEST NOTES:

* the build/resources and build/testResources sections are identical across pose-parent and archmage-main which is why they're here.  I can be talked down from that ledge.

* the maven-compiler-plugin has a default arg of "-Xlint:unchecked" which archmage will override to be stricter

* this is just a SNAPSHOT that no one declares as a parent yet, so don't worry if everything isn't 100% locked down; I'm just interested in getting started early this iteration.