[mythtvnz] Finally got tv_grab_nz-py script working

[Curtis Walker]

Just in case this help anyone else out:

After much trial and some tribulation
(http://www.gossamer-threads.com/lists/mythtv/mythtvnz/520548), I've
finally got the tv_grab_nz-py script working automagically in MythTV
(0.25).

Setup is as per this archived thread: (especially post #7 by Mike
Brady): http://www.gossamer-threads.com/lists/mythtv/mythtvnz/501519

Turned out that my problem related to which user was running
mythbackend, and therefore where the backend goes looking for the
config files. In Arch Linux at least, the default mythbackend daemon
is set to run as user 'root'. To fix, you have to set
"MBE_USER='username'" in /etc/conf.d/mythbackend, where 'username' is
where you've got the tv_grab_nz-py generated config file (by running
"tv_grab_nz-py --configure --config-file ~/.mythtv/<video sources
name>.xmltv").

For example, for the user 'robert', with the Video Source name in
mythtv-setup as 'FreeviewHD', you'd have "MBE_USER='robert'" (without
double quotes) in /etc/conf.d/mythbackend. The generated config file
would be: /home/robert/.mythtv/FreeviewHD.xmltv.

Test