[Biojava-l] Fixes to Stax code

[Dr S.M. Huen]

Hi,
I have included a number of fixes to the some of the StAX handlers.  These
circumvent exceptions encountered in parsing Gadfly GAME-XML files.  You
wouldn't believe the amount of whitespace they have around numbers (it
could either be really there or inserted by the file transfer program from
tab expansion).  The minor change introduces a trim() to remove this prior
to conversion.

Could a man who can commit these to CVS please?