colors.yuv: adding support for YUV colors.
io.directories: Add with-resource-directory word and use it.
sequences.extras: adding reject, "[ not ] compose filter".
combinators.extras: adding throttle.
sequences.extras: adding reject!.
windows.winsock: the servent structure is different between 32-bit and 64-bit.
windows.winsock: port should be short, not sure if it should be PACKED-STRUCT or not.