51.11 compatibility

[ab9rf]

changes required for compatibility with DF 51.11

note that this will break the Buildings module and the preserve-rooms plugin

[github-actions]

The sizes of the following types have changed in this pull request. Please verify that this is intentional. Note that renamed types are not currently detected and will also be listed here.

Type	Platform	Previous size	New size (this PR)	Change
building_civzonest	linux64	464	456	-8
building_civzonest	windows64	464	456	-8
d_init	linux64	1856	1888	+32
d_init	windows64	1856	1888	+32
d_init_dwarfst	linux64	84	116	+32
d_init_dwarfst	windows64	84	116	+32
init	linux64	29144	29176	+32
init	windows64	15704	15736	+32
init_media	linux64	48	80	+32
init_media	windows64	48	80	+32
itemdef_weaponst	linux64	440	448	+8
itemdef_weaponst	windows64	440	448	+8

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