This converts the CMake license to a pure 3-clause OSI-approved BSD
License. We drop the previous license clause requiring modified
versions to be plainly marked. We also update the CMake copyright to
cover the full development time range.
In cmXMLParser::ReportXmlParseError we were accidentally passing a value
of type 'XML_Parser*' to expat methods instead of 'XML_Parser'. It was
not caught because XML_Parser was just 'void*' in the cmexpat version.
Newer system-installed expat versions catch the error because XML_Parser
is now a pointer to a real type. This correct the type.
Brad King
Bill Hoffman
Andy Cedilnik