first version of OpenBSC to be confiugred by config_file

We nowuse the interactive VTY layer to configure OpenBSC. You can
create BTS's, set their parameters as well as TRX's and their
timeslots on the telnet UI.

What is lacking so far:
1) we only read the config file once and don't properly react
   to changes performed at runtime
2) ip.access BTS supportis not integrated yet

There are three config files as examples
* openbsc.cfg.1-1: single BTS, single TRX
* openbsc.cfg.1-2: single BTS, dual TRX
* openbsc.cfg.2-2: dual BTS, dual TRX
3 files changed
tree: b520fbd01c46811b187c32f480a989fbf3127cf4
  1. linux-kernel/
  2. openbsc/
  3. wireshark/