New repository for BTS code

Hi!

I've created a new git repository (osmo-bts.git) for the BTS-side code. You can browse it at http://cgit.osmocom.org/cgit/osmo-bts/

So far it only contains an import of Andreas' osmocom-bb.git jolly/bts branch, and some minimal modifications like include path changes.

However, the code does not build yet. The TODO items are as follows:

* de-couple the LAPDm code in OsmocomBB from references to osmcom_ms and other OsmocomBB specific data structures * put the LAPDm code into a shared library * link that library from both layer23 and osmo-bts * merge all common code and definitions/structures for RSL, OML and RTP together with the openbsc/src/lib{abis,trau}

Regards, Harald