UIMA-3832 dont adjust free memory when running agent in simulation mode

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1596262 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3833 enable memory adjustment code. Fixes bug introduced in the last update

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1596267 13f79535-47bb-0310-9956-ffa450edef68