ISP-447 removing the profile "crutch" and setting the source=1.6 and target=1.7 (got those backwards in the last commit).

Adding an animal-sniffer plugin set to detect JRE incompatibilities between Java 7 bootstrap/compiler and Java 6 JRE API.
Merge pull request #6 from tvaughan77/master

ISP-447 removing the profile "crutch" and setting the source=1.6 and tar...