0.14pre1 release

Libxml++ developpement is restarting !
As the new maintainer of libxml++, I'm pleased to announce the release of this 0.14 pre-release.
This release includes :
* Ported to g++ 3.2. The code should now also compile on compilers which are a bit more strict about c++ than previous versions of g++
* Added method XMLNode::line() wich returns the line number of a non content node in the source file.
* Added encoding file support by XMLTree::encoding() and XMLTree::set_encoding() methods
* Replacement of hash_map by map for node properties lists, since it has been reported to be faster, and to simplify porting to other plarfoms.

Once this package is tested and validated, it should become 0.14 release.