Shapely 1.0.8

Hi Sean, thanks for the kind words and getting an official fix out so quickly. I must give credit where due: All the hard gdb sleuthing was led by my coworkers David Turner and Douglas Mayle. I don't have the necessary C/C++ chops to have solved this on my own. Oh, and to clarify, the problem had nothing to do with Zope (or Grok in our case), this upgrade should be good for anyone running on a 64-bit system. I was eventually able to write a standalone script that demonstrated the segfault. The same problem could afflict any python package that uses Ctypes on 64-bit systems without explicitly marking argument and return types.