-server added for 32bit configuration,
UseConcMarkSweepGC / UseParNewGC / CMSIncrementalMode
surrounded with write action
[git tests] Stop any async jobs started during the test

Remember the Future when executing on a pooled thread to the field,
cancel all Futures on tearDown.
[git tests] add a comment

Clarify why dynamic overriding is still used in Cucumber tests.