Fixed bug #11 when DVB adapter driver has missing support for FE_GET_…

…FRONTEND ioctl call.

The only solution is to use better driver (if exists) or another hardware.

added support for up to three different frontend modes for the client

mode can be switched while e2 is running ( tuner configuration, choose
vtuner and switch tuner type)

modes can be given as parameter to vtunerc.mipsel, possible values
are:
-s2: register DVB-S2 frontend, but connect to any DVB-S or -S2 server
-S2: register DVB-S2 frontend, connect to DVB-S2 server
-s:  register DVB-S frontend, but connect to any DVB-S or -S2 server
-S:  register DVB-S frontend, connect to DVB-S server
-c:  register DVB-C frontend, connect to DVB-C server
-t:  register DVB-T frontend, connect to DVB-T server

You should edit /etc/vtunerc.conf after installation on your box:
DAEMON="/usr/sbin/vtunerc.mipsel"
OPTIONS="-s2 -c -t"

NOTE: The old vtunercs, vtunercc or vtunerct calling convention is
still supported, but this limits to client to one frontend.

NOTE: the mipsel server can't distiguish between DVB-S2 and DVB-S,
you should not use -S2 if you want to connect to a mipsel box.