dyn TS tweaks and fixes

Hi all, I have some patches that probably fix some corner cases of dynamic pchan switching. However, since I'm technically already in vacation, I will only be able to properly test them in about 10 days' time. If they should become interesting before that, the changes are pushed to branches called neels/dyn_fixes in openbsc and osmo-bts. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte