Fixed Arm Cannon/consistency patch

[Terrence7522]

This one has the been the result of me realizing no amount of graphical editing will fix coding issues M2 has when it comes to displaying the arm cannon consistently, in regards to size, shape, or position.

This BPS patch fixes all of that and is intended for a vanilla experience to build off of.

Now it will always look the same after switching back from missiles and will no longer grow a pixel during left-facing jumps or shrink while aiming up and jumping.  Missing pixels while looking up have been fixed as well.  And some more things mentioned in the text doc I included.

Many thanks again to PJ Boy and RT-55J for the help.

Before:


After: