Patch from ActiveState.

Patch and tests by Neil Muller.

And not the locale encoding. With this commit, the test finally pass on Windows
with a non-ascii path :-)

encodable to utf-8, not to the file1 encoding.

Tools/gdb/libpython.py.

PyUnicode_AsUTF8String()

instead of utf-8 in strict mode.

PyUnicode_FromString(), to decode the filename.

  a py_decref macro, fixup the pyo macro and reuse it and avoid a memory
  leak introduced by the pylocals macro.
* Adds a note about gdb 7 python debugging support with links for
  more info on that.

Remove second parser module example; it referred to non-readily-available example files, and this kind of discovery is much better done with the AST nowadays anyway.