SWITCH_MULTILEVEL support (thanks to cyberdwarf)


git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@2526 2b470e98-0d58-463d-a4d8-8e2adae1ed80
MAXLAN: fix hang on connection error

git-svn-id: https://fhem.svn.sourceforge.net/svnroot/fhem/trunk/fhem@2527 2b470e98-0d58-463d-a4d8-8e2adae1ed80