PRICE - image filtering and manipulation Code

cleanup

revert previous wrong commit, Array was already autoreleased

make sure parameters are autoreleased and retain/release them on filter run for safety

initialize compression to 75% so it is set to default if not user selected

doc type fixes for 10.6

optimize scale algortihm handling of corner cases

fix warnings and remove some debug logs

Fix destination offset with correct bytes per row

use NULL and not nil for pointer

handle edges by holding off last pixel value