[mythtv] Ticket #7293: win32-packager.pl updates and cleanup

[buzz]

>  Agreed.  I would much prefer upstream bug fixes over workarounds in a
>  build script.  That said... David, if you have a specific example of a
>  current bug that would be (re?)introduced by the proposed changes, please
>  share.

I don't go round re-testing my existing/working code for fun, so no, I
dont have any specific examples. I did put every line in there for a
reason at the time though.