Changes

Z: Short circuit var length array cmp helper

Add short circuit test of whether two array addresses are equal for
arraycmp. This particular case handles unsigned result and variable
length or length greater than 4K.
Short circuit branching is added to the start of instruction sequence.

Signed-off-by: Ehsan Kiani Far <ehsan.kianifar@gmail.com>
 (commit: 47bc735)