gbx: GSMS feature (send and receive) now completed.
Details see: http://www.streamboard.tv/wbb2/thread.php?threadid=40522&page=5
Add to docu optional parameter:
oscam.conf/[gbox]
gsms_disable = 1  # disable GSMS feature
gsms_disable = 0  # default

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9707 4b0bc96b-bc66-0410-9d44-ebda105a78c1