Merged namespace functions from head:
rev. comment
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15965 Bugfix: wrong variable "xpath" used instead of "name"
15962 Test for NO_NAMESPACE instead of existence of ":"
15961 Bugfix for namespace support when building xml output from editor
15960 Refactoring and bugfixes for buildxml: URIResolver, namespace support now works as expected.
15954 Added namespace support to MCRURIResolver and MCRInputValidator.
Additional namespaces can be configured using properties like MCR.Namespace.<prefix>=<uri>
