emulators/wine-devel: Make GECKO_RUN_DEPENDS more flexible

Simplify GECKO_RUN_DEPENDS along the lines of what we did with
MONO_RUN_DEPENDS in 996345a04d856fdc863ddce257b8d98da8074d6c some
months ago.

That way updates of that other port won't require adjustments here
any longer while the system becomes more resilient.