fifoparser: send unparsed message end to post parsing
libmemdisc: fix a typo and a magic constant
ugtrain: discovery: improve stage 3 and 4 post-parsing

Now, we can see the backtrace for the matching malloc in stage 3.
In stage 4 we can see the related stack offsets as well.

The next step is to get the related function calls from the
disassembly.
discovery: stage 3/4: get function calls from disassembly

We use once again shell command magic based on 'objdump' to get the
names of the functions in the backtrace. We are only interested in
library functions and not internal function calls as malloc is
always a call to an external C/C++ library function.
discovery: stage 3/4: fix max. backtrace to be 11