#65 10% recon abuses

[Markus Armbruster]

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

Capability recon has two rather minor flaws:

* Spy returns information even when he's caught

Maybe give efficiency/100 chance.

* Bonus on spy value for gathering intelligence on
units encountered
in combat

Maybe make bonus proportional to efficiency.