Merge pull request #189 from Alexpux/develop

Update Python-2.7.4 patches
Update Python 2.7.3 and 2.7.4 patches.
Add patch for GDB.
Revert last patch for GDB
initial implementation of --python-only functionality
Merge commit 'f97f397246e351e9d13879dd62deda1b11e40c66' into develop