fixes #62
new line issue in commit msg have been corrected
the following client functions have been enhanced with an optional 'msg' parameter to override the automatic commit text:
copyMoreNodes
createChildren
startTransaction
completeTransaction
setattributes
delAttributes
setRegistry
delRegistry
deleteNode
delMoreNodes
createChild
makePointer
delPointer
addMember
removeMember
setMemberAttribute
delMemberAttribute
setMemberRegistry
delMemberRegistry
createSet
deleteSet