configs/sim/axis/twopass new sim demo
docs: updates for configs reorganization

+ restore common/starting-emc.txt to Master_Integrator.txt
+ update for configs/sim/axis/twopass/
Finish removing M69, which was replaced

Previously M69 was accepted without error, but did nothing.
With this change, it's back to being an unknown-m-code error.
Ignore auto-generated manpages for two new comps
Merge branch 'v2.5_branch' into 2.6

Conflicts:
	docs/man/man9/.gitignore
Merge branch '2.6'