Updating dfhack to newest version (rc8)

[magnus-ISU]

Updating dfhack seemed to be straightforward, with a weird build error I was able to hack around.

I updated a line in .config to grab the newest github tag.

Compiling somehow failed - there was an error in compiling some C++ code.

There was an offending duplicate function called int_to_string in TWBT and dfhack I think.

I found TWBT and deleted the function, then reran lnp-forge build.

Then compilation succeeded.

Here is a binary until this is officially done: https://github.com/magnus-ISU/appimage-store

[francoijs]

here is a build: https://github.com/McArcady/lnp-forge/actions/runs/3610760549

[McArcady]

merged: 565e574