Use strdup to be able to use strtok on the category string and add
a test case. Also safe some more information to be able to use color
in the print statement.
* initialize OML and RSL based on TEI establish (ACTIVATE_IND) events
* fix abis_nm_raw_msg() to not overwrite the OML header with payload
* fix debug print statements
* fix msgb_dequeue: actually dequeue it from the list ;)