gfgtdf 3950f40f3f remove [advancefrom] from mainline
See issue #3955
the intention is to deprecate [advancefrom] in
favour of [modify_unit_type], because it was a
common source of OOS errors, and it is less flexible.

As a secondary effect this also fixes issue #4402 :
"changing units via extra_defines sometimes not working
because extra_defines had bugs".
Now we no longer use extra_defines for that.

Addon authors should now no longer use these extra_defines,
instead put the new core marcos with the same name directly
into [campaign].
2020-03-12 19:15:17 +01:00
..
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