Fix: Emperor Overlord Incompatible With Subliminal Messaging

[commy2]

• Relates to /~https://github.com/xezon/GeneralsGamePatch/issues/21

ZH 1.04

• The Emperor Overlord does not benefit from the Subliminal Messaging upgrade.
• There is an upgrade icon for a Propganda Tower on the Emperor, but it cannot be purchased and is always greyed out, despite the unit spawning with a Speaker Tower.

After patch:

• The Emperor now benefits from Subliminal Messaging, meaning the healing rate can be upgraded from 1% per second to 2% per second. With Subliminal Messaging, the unit will grant the SUBLIMINAL status to nearby units, which means an additional +25% Rate of Fire.
• The Propaganda Tower upgrade icon is now always highlighted.

Note:

• The Emperor already was using the nerfed healing rate (like the Assault Outpost). A Speaker Tower building/base defense grants 2% per second or 4% per second instead. The Rate of Fire bonus however is identical.

Rationale

This is a bug fix. All China Propaganda Towers now benefit from the upgraded Subliminal Messaging as one would expect.

This in turn makes the Emperor Tank and combined forces stronger. The Emperor Tank is an identical copy of the Overlord Tank, apart from its Vet 1 production, built-in Propaganda Tower and its ability to upgrade a Gattling Cannon on top of it.

After the Subliminal Messaging upgrade, the patched Emperor Tank will no longer perform worse against the China Overlord, because it will now too benefit from all the upgraded Subliminal Messaging bonuses. Originally the China Overlord can actually win head to head against the Emperor Tank, if they have the same veteran level. This was counter-intuitive, because the Tank General is expected to have the superior arsenal of tanks, while having disadvantages in other areas, such as more expensive infantry, aircraft and a lack of artillery tanks.