[GSOC-STATUS-UPDATE] Impress Remote Control

[Andrzej J. R. Hunt]

Hi all,

A brief status update of the last 2 days:

- Switched from Unix sockets to sal code.
- Debugged & fixed a threading bug.
- Fixed some bugs in the command parsing.
- Basic remote control now works (back/forward)!
- Added Service to Activity messaging in Android app (for server to app 
communication).
- Code to show slide number and preview images in app.
(Untested until I've written the server portion, see below.)
- Initial work on image export from LO.

Cheers,

Andrzej