change of file extension from nuv to mpg is wrong with a transcode

[asmythtv@…]

​Changeset 7246 changed the file extension of recodings, which was nice.

However when you transcode a recoding it gets transcoded to a .nuv, yet the file still has a .mpg extension.

[cpinkham]

(In [7307]) Mythtranscode/JobQueue? related changes.

• ProgramInfo?
  • GetPlaybackURL() modified to also check the local host's recording directory in case it the client has the server's recording directory mounted on a different path.
  • Added ProgramInfo::SetRecordBasename?(QString basename) to set a recording's basename in the recorded table.

• mythtranscode
  • Modify mythtranscode to take a JobQueue? ID as an argument when run from the JobQueue? rather than needing a chanid, starttime, and -d argument.
  • If a nuppel format file is generated by mythtranscode when it is being run from the JobQueue?, mythtranscode will set a flag to tell the JobQueue? that the resulting file is in the nuppel format.
  • Change JobQueue? status update and command check frequency to 20 seconds down from 60.

• JobQueue?
  • Add ChangeJobArgs?() and GetJobArgs?()
  • If the JobQueue? sees that a mythtranscode run resulted in a nuppel format file, it will check to see if it needs to rename the resulting file from .mpg to .nuv when the old and new transcoded files are renamed. The basename in the recorded table will also be updated if the file is renamed to .nuv. Closes #369.