Breaking sanctuary turns 100% sanctuaries into capitals, all others
into highways. Before Empire 3, sanctuaries always became capitals.
Give deities more control over initial state of countries than
choosing between 100% capital and <100% highway sectors: turn
sanctuaries into their new designation on break. Except make a
capital when the new designation is sanctuary (which it normally is).
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>