[Mod Compatible] ZH GLA Mission #2 - Hidden Agenda

A modified Zero Hour GLA Mission #2 map, compatible with game mods.

**********************************************************
Compatible Game Mods:

* C&C Shockwave mod version 1.25 Beta 8,
* NProject mod version 2.10.1.0,
* Partial support for game mods that has vanilla factions & GLA Stealth faction.

**********************************************************
Changes:

* Replace General Challenge's Stealth General with Skirmish Stealth General,
* All Stealth General's units are started with stealth upgrade,
* Replace Stealth's Technical with custom entity to prevent game crashes caused by game mods,
* Set Stealth General alliance to player as neutral during mission intro, reset after mission intro done playing,
* Prevent Scorpion & Ranger from moving during mission intro,
* Allow camo netting upgrade for Sneak Attack tunnel.

**********************************************************
Know Issues:

* Button icon for GLA Stealth's Technical has wrong image.