NessComputing/galaxy — pull request #8 by stevenschlansker (2013-04-16 22:44:53+00:00)
Title: Allow unsetting JVM command line arguments in jvm.properties by prepending a !

For example, the global configuration may have
-XX:+UseConcMarkSweepGC

but if you want to try G1GC, you could now do
!-XX:+UseConcMarkSweepGC
-XX:+UseG1GC