Updated OpenMW to the latest version, which requires additional dependencies. Resolves issue #2970

OpenMW

Upgraded to v0.47.0 and modified patch to get it past the wizard dialog

New package: recastnavigation

In order to compile OpenMW, it needs recastnavigation, otherwise OpenMW will try to download and compile it within the build() process which fails because no internet access allowed.
Released under the ZLib license.

New package: bullet-double

Openmw requires double precision support which this package fulfills. The current bullet package comes from Arch repos but hasn't been built with double precision because of performance reasons.
Released under the ZLib license.

Both new packages don't build on arm for me, I get the following error when compiling: semop(1): encountered an error: Function not implemented

I've lumped this altogether because it doesn't seem like openmw will run without these additional packages. Both new packages are relatively low maintenance with very few releases.