[handover] first functional handover implementation
With this commit, we can successfully hand over a channel from one cell to
another cell. We implement asynchronous intra-BSC (but inter-BTS) handover.
Changes:
* introduce new DHO log category
* extend rsl_chan_activate_lchan() with argument for HO reference
* introduce actual minimal handover decision making in handover_decision.c
* various fixes to bsc_handover_start() in handover_logic.c
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index f225821..5692ac4 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -11,7 +11,8 @@
gsm_subscriber_base.c subchan_demux.c bsc_rll.c transaction.c \
trau_frame.c trau_mux.c paging.c e1_config.c e1_input.c tlv_parser.c \
input/misdn.c input/ipaccess.c signal.c gsm_utils.c talloc.c \
- talloc_ctx.c system_information.c bitvec.c rest_octets.c
+ talloc_ctx.c system_information.c bitvec.c rest_octets.c \
+ handover_decision.c
libmsc_a_SOURCES = gsm_subscriber.c db.c telnet_interface.c \
mncc.c rtp_proxy.c gsm_04_08.c gsm_04_11.c transaction.c \