adjust url, new upstream release, add vdr-dfatmo plugin

Some Comments to dfatmo:
* I created a new vdrplug.mk for 1.7.36 and already submitted it to dfatmo upstream, but no answer so far. That's why I'm shipping it in the package.
* In build() I'm unsure whether to unset the CFLAGS to use the ones in the vdrplug.mk (line 21-22) or whether to extend them (line 23).
* I've split the packages in the VDR-Plugin and the Output drivers. Namcap complains about the drivers being in a non-standard directory, but that's how upstream does it.

In general what do you think about adding the date after the version, when using newer git commits on top of an older version? In vdr-dfatmo it would look like
* vdr-dfatmo-0.3.1-20121128
rather than
* vdr-dfatmo-20121128

This way we could ship as many packages in between two versions as we want in the case upstream doesn't bump versions and newer git version fix our compiling.
Right now once we're in date-only versioning, we can't easily go back to the original upstream versioning.