common: Python-related bits
common: Python-related bits

- include Python.h at the very beginning if building with Python
  support (to avoid warnings about macro redefinition);
- Remove <loki/TypeManip.h> - everything is in STL now;
- Remove plugin-related aliases defined in plugin_common.h

uentity/blue-sky-re,uentity/blue-sky-re,uentity/blue-sky-re