Implement put_channel/get_channel, save on which bts we currently operate

Allow to change the refcount for a given channel. Store which
bts is our primary bts. A command to switch the primary bts will
be added as well. This makes entering and parsing of commands more
easy.
tree: 5562f8e489233fc4d95776920a1ab3c80b7dacf2
  1. tests/
  2. tools/
  3. AUTHORS
  4. configure.in
  5. COPYING
  6. Makefile.am
  7. README