FW2.1|fixup bug|fixup bug when merge code with main branch
Description:
      1, add imgctrl to get zoom position
      2, to fixup bug in the systemsetting_server.cpp when sighandler call st_RunLoop
      3, to recover the changedevcfg.sh
Affected Module: autotest systemsetting_server
Risk: Middle
Tested:autotest.pl
Code Review:wrc