K 10
svn:author
V 6
jdorje
K 8
svn:date
V 27
2005-07-24T17:01:37.000000Z
K 7
svn:log
V 139
Encapsulate the improvement_types[] array inside improvement.c.  Change
all users to use get_improvement_type().

Patch by me in PR#13516.

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