Revert "Do not start DVBAPI client (and unnecessary thread) if DVBAPI is compiled, but not available on the machine". Thanks to @pivo and @Duremar for testing.
Compatible STBs:
Octagon SX88
Octagon SX88+
Octagon SX88+ Optima
Octagon SX88+ Combo
Octagon SX888 IP
Octagon ASAT HDR No.1
Octagon...