Log Message:
Updating package for Perl 5 module XML::SAX in textproc/p5-XML-SAX
from 0.96nb6 to 0.99.

pkgsrc changes:
- importing new package for extracted XML::SAX::Base module

Upstream changes (not noted by Author!):
- extracted XML::SAX::Base and XML::SAX::Exception module
- improved/fixed CDSect parsing