attempt to avoid out of memory errors during what is fixed runs

releng.wtpbuilder/scripts/whatisfixed/build.xml

@@ -33,7 +33,9 @@
 
 		<java taskname="cvsbugz" classpathref="rlog.path" fork="true" classname="org.eclipse.wtp.releng.cvslog.tools.Main" failonerror="false">
 			<jvmarg value="-Xms128m" />
-			<jvmarg value="-Xmx512m" />
+			<jvmarg value="-Xmx1024m" />
+			<jvmarg value="-Xcompactgc" />
+			
 			<arg value="${mapCvsRoot}" />
 			<arg value="${whatisfixed.since.date}" />
 			<arg value="${whatisfixed.to.date}" />