Log Message:
Update p5-MARC-XML to 0.93.

Changes from previous:
0.93 Fri Feb 11 17:13:02 EST 2011
       - When slurping MARCXML records (e.g., via MARC::Batch), can
         now handle XML files that use a prefix
         to refer to the http://www.loc.gov/MARC21/slim namespace.
       - If trying to parse a MARCXML record that has omitted
         the <record> wrapper element, throw an exception
         with a more meaningful error message.
       - adjusted copyright statement further to meet Debian requirements
         (RT#48333)
       - set license in Makefile.PL