fix stride side when patching strided img
implement switch_img_patch_rect to patch partial of an img to a bigger IMG
refactor switch_img_copy_rect to support ARGB

fix emacs tabs mode

fix seg when passing NULL to strstr
use zstr to detect empty str
fix compiler warning about || and &&

CID: 1294434 fixing a sizeof statement that was working for so long because on 64bit boxes the pointer size would be 64bits and the uint8_t was expecting at least 32