[Pixman] FPU-based implementation of the core pixel pipeline

[Dmitri Vorobiev]

Hello all,

Finally I finished combing through the code that we had, and now the
floating point-based core pixel pipeline is available from our Git
server:

http://sandbox.movial.com/gitweb?p=dmvo/pixman.git;a=shortlog;h=refs/heads/float

Please review. Note, however, that this implementation should be
considered far from final, it contains bugs, etc. We are willing to
work further on this.

Thanks,
Dmitri