Add some new FAST_PATH flags
The flags are:
* AFFINE_TRANSFORM, for affine transforms
* Y_UNIT_ZERO, for when the 10 entry in the transformation is zero
* FILTER_BILINEAR, for when the image has a bilinear filter
* NO_NORMAL_REPEAT, for when the repeat mode is not NORMAL
* HAS_TRANSFORM, for when the transform is not NULL
Also add some new FAST_PATH_REPEAT_* macros. These are just shorthands
for the image not having any of the other repeat modes. For example
REPEAT_NORMAL is (NO_NONE | NO_PAD | NO_REFLECT).