re-apply 0660a79
update dfhack lua script for offset export
40.07-40.09 osx mem layouts, correct typo.
fix osx layouts
osx layouts?
fix #129
New checksums generated by v24.0. df40.07 and 40.08 didn't change.
remove invalid/duplicate setuid from main from #128
Remove OS-specific entries from .gitignore.

.gitignore should only store items that are generated by the code in the
repository. If your operating systems generates temporary files, put
those in your .gitignore_global.