allow more level numbers

git-svn-id: https://svn.code.sf.net/p/fhem/code/trunk@6274 2b470e98-0d58-463d-a4d8-8e2adae1ed80
OWX_SER: fix 'uninitialized value  in vec'

git-svn-id: https://svn.code.sf.net/p/fhem/code/trunk@6275 2b470e98-0d58-463d-a4d8-8e2adae1ed80
OWAD,OWMULTI: slightly increase delays in 1-wire timing

git-svn-id: https://svn.code.sf.net/p/fhem/code/trunk@6276 2b470e98-0d58-463d-a4d8-8e2adae1ed80