We now
* properly decode the L1 header of SACCH frames
* properly hand-off SACCH payload such as SI5/SI6
* display the summary of the GSMTAP and SACCH_L1 dissectors in the protocol tree
* remove commented-out code
* explain what GSMTAP is and reference projects that can generate it
* update copyright notice
I will submit this to wireshark mainline now.