Patches to make Windows port work with Python 2.6a3

Patches to make Windows port work with Python 2.6a3

Cython/Compiler/Errors.py:
    Needed the self.message removed because of deprecation in BaseException.

tests/compile/food.h:
    Converted line endings from Mac to Unix since VS2008 compiler
    fails with Mac text files.

tests/compile/belchenko1.pyx:
    Changed cdef extern to eliminate math.h since it doesn't exist on Windoze.
    This needs to be reviewed since it isn't clear if the test
    needs to build the lib with math.h or whether it is just
    testing the compiler (which wouldn't read math.h anyway).