[MPlayer-dev-eng] weighted gamma correction in vf_eq2

[Alexander Stege]

Hi!

I added another option to the vf_eq2 (#8).
It weights the gamma corrected pixel value towards the uncorrected
value. Thus it damps the effect of the gamma correction in bright
areas while still boosting dark values.

Everyone is welcome to either give me cvs write access or check in 
the following files themselves:

For main tree:
http://www.legale-software.com/vf_eq2.c.main

For 0.90 tree:
http://www.legale-software.com/vf_eq2.c.0_90