* rewrite the code to always recursively walk the node tree when searching
for a particular node. this is required for cases where a node with a
particular name is located deeper in a node with the same name;
for example -r /configuration/device/reference/device would fail in the
previous verion
* rename xmlGetElement to xmlGetNodeNum and add the possibility to request
the nth node with this name
* rename xmlGetNumElements to xmlGetNumNodes
The drawback is that this is approach slows down processing the files a bit,
but at least it can now find any xml node in any xml file.
Also, no more function changes are planned from now on.
* depreciate __xmlFindNextElement and use __xmlGetNode instead
* xmlGetNextElement now returns char* instead of void* for furute use
* add preliminary support for wildcards in the search path ('*' and '?')
