Do all remaining changes necessary for a working build.
Add Makefile.am files in include/... subdirs.
Remove noinst_HEADERS directives from src/*/Makefile.am, but keep the headers
list to feed to move-asn1-header-files.sh.
Adjust all #includes in src/*_common.h and elsewhere. In hnbap_common.h,
separate the ASN.1 "primitive" headers from the others, and include them
without a subdir path, as before.
This socket doesn't do much yet except to connect to localhost:14001
The host/port needs to be made configurable, and the RUA<->SUA
interfacing needs to be implemented.
Also, we'll need two SUA sockets, one for MSC and one for SGSN.