- Fixed bug with failed parsing of blank dbf values.
- Fixed bug with failed parsing of blank dbf values.

git-svn-id: f8e60ff998d72239c1081e8bd439defbd02fb3ec@33 6bd14dac-74e7-11de-ab85-01204adfcb19

rmgit/pyshp,jzmiller1/pyshp,tectronics/pyshp,micahcochran/pyshp,CalebM1987/pyshp,djhenderson/pyshp,jzmiller1/pyshp-1,GeospatialPython/pyshp,petabytekr/pyshp,lannymac/pyshp,tarsh/pyshp