Upstream compat

[Buckaroo Banzai]

I think for the full compatibility to the upstream technic we are missing the following PR's:
(this is just to keep track of them)

• minetest-mods/technic#600
• minetest-mods/technic#592
• minetest-mods/technic#574 (not sure about that one, might already be in here)
• minetest-mods/technic@349676f CNC: Fix startup error and texture warnings

[OgelGames]

Also minetest-mods/technic@349676f

[SX]

Machine infotext thing is already here #207 (I've originally built suggestions on top of mt-mods version)