Hi all!

I would like to inform, that this task is almost finished! Just tested
my changes, and build was successful without any warnings. But I still
have a couple of unresolved issues:

I have some problems with understanding how to add a new item into the
convolutional codes generator (utils/conv_gen.py), so temporary I just
used a single file from OsmoBTS (gsm0503_conv.c) to check, if all the
rest forks fine. If someone (Max?) can help me to move missed tables
(mostly EGPRS specific, see 73cb583e5147a267a370c576e8ac77507de6d0d7),
I will be grateful, and the task will be completely finished soon.

Also, there are several external dependences from libosmocodec, such as:

 - gsm620_unvoiced_bitorder
 - gsm620_voiced_bitorder
 - gsm660_bitorder
 - gsm610_bitorder

They are some uint16_t arrays, related to GSM HR, FR and EFR. It's sadly,
that they cannot be included using exactly corresponding header files.
I think there are three possible ways to solve this problem:

 1. Link gsm620.c, gsm660.c and gsm610.c to libosmogsm sources.
     (I am not sure, that it is a good way...)
 2. Copy required arrays to libosmogsm (also unlikely).
 3. Add libosmocodec.la as dependence (I suggest exactly this solution):
     - libgsmint_la_LIBADD = ../libosmocore.la
     + libgsmint_la_LIBADD = ../libosmocore.la ../codec/libosmocodec.la

All other problems was solved.