* Use portable Python for map merge hooks, other tools (#55658)
* Add .dmm merge driver (#55699)
This is kind of a prototype. It only fully handles a few situations,
and doesn't produce particularly easy-to-read conflict markers when it
fails. I hope that it can be useful at least some of the time, can be
improved over time, and that the lessons learned can influence a future
interactive GUI conflict resolver (integrated into StrongDMM?). In the
worst case, one can fall back to the tried and true "manually re-do one
side's changes" strategy.
**Automatic use**: In `tools/hooks/`, run `Install.bat`
**Manual use**, for Git GUIs that don't run merge drivers: while a
merge is in progress, in `tools/mapmerge2/`, double-click `Resolve Map
Conflicts.bat`
This PR also removes the error-prone "Prepare Maps.bat" /
"mapmerge.bat" workflow. Those who aren't using the hooks should
instead use `Run Before Committing.bat` before committing. First-time
contributors who opened a PR without map merging can be advised to run
`I Forgot To Map Merge.bat`.
* Fix loose double-quot in tradership_faction.dmm
Co-authored-by: Tad Hardesty <tad@platymuus.com>
Turns out GitHub Desktop actually does bundle a sh.exe, just not a bash.
Also tries to look for the py launcher to help people who didn't check
the "Add Python to PATH" option.
It hooks into git as a merge driver and automatically runs with merges.
It prints a log of what it did, and if any specific states are
conflicted it indicates them and does not mark the merge as successful.
The conflicting icon can then be opened in DreamMaker and the
conflicting states resolved there.
