changed start parameters which caused deadlocks in mac and windows

versions

addon/YaCy.app/Contents/Info.plist

@@ -25,7 +25,7 @@
 	<key>Java</key>
 	<dict>
 		<key>VMOptions</key>
-		<string>-Xmx600m -Xms180m -Xss256k -XX:MaxPermSize=256m -XX:-UseGCOverheadLimit -XX:+UseAdaptiveSizePolicy -Djava.net.preferIPv4Stack=true -Dfile.encoding=UTF-8</string>
+		<string>-Xmx600m -Xms90m -Dsolr.directoryFactory=solr.MMapDirectoryFactory -Dfile.encoding=UTF-8</string>
 		<key>WorkingDirectory</key>
 		<string>$APP_PACKAGE/Contents/Resources/Java</string>
 		<key>MainClass</key>

startYACY.bat

@@ -18,7 +18,7 @@ if exist DATA\SETTINGS\httpProxy.conf GoTo :RENAMEINDEX
 if exist DATA\SETTINGS\yacy.conf GoTo :GETSTARTOPTS
 
 :STARTJAVA
-set javacmd=%javacmd% -XX:-UseGCOverheadLimit -Djava.net.preferIPv4Stack=true -Djava.awt.headless=true -Dfile.encoding=UTF-8
+set javacmd=%javacmd% -Djava.awt.headless=true -Dsolr.directoryFactory=solr.MMapDirectoryFactory -Dfile.encoding=UTF-8
 Rem Starting YaCy
 Echo Generated classpath:%CLASSPATH%
 Echo JRE Parameters:%javacmd%