Log Message:
Update to 2.5.5.  Changes in this version:

* Lot of fixes on the Relax NG implementation. More testing including
  DocBook and TEI examples.
* Increased the support for W3C XML Schemas datatype.
* Several bug fixes in the URI handling layer.
* Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding
  conversion, line counting in the parser.
* Added support for $XMLLINT_INDENT environment variable, FTP delete
* Fixed the RPM spec file name.