#64 10% security abuses

[Markus Armbruster]

A 100% unit should be about 10 times as useful as a 10%
unit to prevent `gamey' tricks.

The following security missions are flawed:

* Provide mil for convert, shoot and che fighting

Mil in security units count double. They factor
should be 1+eff/100.

* Mobility bonus for convert and shoot

Security units lessen the mobility cost. The bonus
should be scaled with with efficiency/100.

[Markus Armbruster]

Fixed in commit 3c1c68f and 04dddb6, v4.4.0.