workaround for BindException at restart on Vista

therefore IPv6 support is lost (Windows only)
see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6286189  and http://forum.yacy-websuche.de/viewtopic.php?t=1385

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5072 6c8d7289-2bf4-0310-a012-ef5d649a1542

startYACY.bat

@@ -22,6 +22,7 @@ if exist DATA\SETTINGS\httpProxy.conf GoTo :RENAMEINDEX
 if exist DATA\SETTINGS\yacy.conf GoTo :GETSTARTOPTS
 
 :STARTJAVA
+set javacmd=%javacmd% -Djava.net.preferIPv4Stack=true
 Rem Starting YaCy
 Echo Generated classpath:%CLASSPATH%
 Echo JRE Parameters:%javacmd%

startYACY_debug.bat

@@ -21,6 +21,7 @@ if exist DATA\SETTINGS\httpProxy.conf GoTo :RENAMEINDEX
 if exist DATA\SETTINGS\yacy.conf GoTo :GETSTARTOPTS
 
 :STARTJAVA
+set javacmd=%javacmd% -Djava.net.preferIPv4Stack=true
 Rem Starting YaCy
 Echo Generated classpath:%CLASSPATH%
 Echo JRE Parameters:%javacmd%