now that we're on JDK7, we can use G1GC
now that we're on JDK7, we can use G1GC

This simplifies some of the run command by removing tuning that is no
longer needed/recommended.

floatingatoll/pad,mozilla/pad,mozilla/pad,mozilla/pad,floatingatoll/pad,mozilla/pad,floatingatoll/pad,floatingatoll/pad,mozilla/pad,floatingatoll/pad