Change required jre to 1.7 from 1.6

New issue
Summary: Require JRE 1.7 instead of EOL-ed JRE 1.6
Status: Started
Owner: snswinhaiku.lo@gmail.com
Labels: Type-Enhancement Priority-High OpSys-All Maintainability
JRE 1.6 is (will be?) EOL-ed. Use JRE1.7!!