[Discuss-gnuradio] Added functionality for pre and post samples to burst tagger

[Daniel Bartel]

Hi,

I have made some modifications to the existing burst tagger in the GNU Radio 
source code. 
It is now able to specify an amount of pre and post samples, which are 
additionally tagged before and after the tag signal.

I have put my changes on my GitHub account, which is: 
https://address@hidden/bartel/gnuradio-bartel.git

Since this is my first work with Git and my first direct change to the GNU 
Radio source code, I would be glad for any advise on improving my code/changes.

I have also tested my code locally, since I am not quite sure, how to add a QA 
code for a C++ block to GNU Radio. Should it be with cppunit or pyunit?
Thank's for helping.

Best regards,
Daniel