Enabled Peer.fwd_msg for python scripts

Use sizeof() to get size of sun_path.

Add get_self command

 - Size varies on platforms, OSX has 104, Linux has 108.

Merge branch 'fix_json_more_chat_info' of https://github.com/luckydonald/tg into luckydonald-fix_json_more_chat_info

Add more info to the JSON user status event

Fix  "bind: Address already in use" error

Python version support fixes

Adding installation method for Archlinux

* commit '11090500':
  Fix typo
  Add install instructions for openSUSE
  lua: added import_chat_link()
  Implement msg.load_*
  Add msg action type enum
  Implement load_ functions
  Add constants for peer types and action types.

Gets more info e.g. the id and flags

All callees were using it the same way

This executes user_info with our_id