Aegis Compat - Overwrite some Aegis changes

[johnb432]

When merged this pull request will:

• "Compat" is too strong of a term, the purpose of this is to only overwrite some changes Aegis makes, in order to fix the stuff that is currently broken when loading both Aegis and ACE.

I've added the "ignore-changelog" tag because I don't want people thinking this is an official ACE-Aegis compat, as atm it's only doing fixes. Personally I'm not planning on adding any compatibility, but I decided to add it for future use.
In order to drop the word "compat", the only alternative would be to add this into the vehicles addon directly.

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[PabstMirror]

We should put it in the patch notes so it's not a surprise to people

• it might show up in requiredAddons in missions
• the ace client/server mismatch errors that people get from running different mods from server

[johnb432]

We should put it in the patch notes so it's not a surprise to people

* it might show up in requiredAddons in missions

* the `ace client/server mismatch` errors that people get from running different mods from server

Would adding

ACE3/addons/vehicles/config.cpp

Lines 15 to 16 in b9a361f

	// this prevents any patched class from requiring this addon
	addonRootClass = "A3_Characters_F";

remove the requiredAddons problem?

[johnb432]

I haven't been able to make it create a dependency (I just placed down both variants of the Merkava in the editor - I'm not sure if you can do anything else).

[PabstMirror]

We never had any luck getting addonRootClass to work
but it's great if it's not creating dependency

I'd still like it in changelog for the mismatch errors people seem to always get but it's fine either way