[freeciv-ai] Improved logging in ai_military_gothere

[Gregory Berkolaiko <Gregory.Berkolaiko@xxxxxxxxxxxx>]

Attached is a patch to improve logging in ai_military_gothere, using new 
and better UNIT_LOG functions.  If Per wasn't developing huge patches, I 
would recommend immediate inclusion.

It contains some cruft, but I left it there intentionally.  I find it 
helpful to receive AI reports from one player only.  You can do it like I 
did, or you can make all other players human (will also save you lots of 
time).

The lessons I learnt from reading the logs will be sent in a separate 
email.

G.

logs.diff
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