Improved cellResc module

* cellResc module improved

* Many changes in this commit are from [DH]: The implementation of
cellRescSetConvertAndFlip, cellRescSetWaitFlip and cellRescSetSrc as
well as all the other changes which are not in cellResc module.

* Fixed another conflict from O1L/rpcs3 (master): Deleted
"cellPhotoUtility" (wich already exists in cellPhotoExport)
Now all the conflicts are solved. :-)

WARNING: cellRescSetPalInterpolateDropFlexRatio and
cellRescAdjustAspectRatio have a strange behaviour (wrong float
handling?).

TODO: Search for a better name for 's_rescInternalInstance'. This one is
just too long and some lines don't even fit in my screen because of
this.

NOTE: This will be probably my last commit in this fork. From now I will
usually push directly in DHrpcs3/rpcs3.