Merge pull request #66 from tawarisch/master

Implemented basic telnet commands for wlan fw 2.31
extracted Telnet functions from ComProxy and moved them to a new class TelnetProxy  ComProxy_ut is working:
ToDo:
 fix make TelnetProxy_ut
 fix make x86_client
 fix make android_client
fixed make TelnetProxy_ut.bin
completed refactoring of ComProxy
fix copyright notice