Merge pull request #660 from magik6k/master

Fixed recipes for StargateTech2
Meddled with some block overlay offsets a little (like power indicator light), might help with z-fighting on some systems.
Merge branch 'master-MC1.7.10' of github.com:MightyPirates/OpenComputers into master-MC1.7.10
Added missing SGT2 mod integration init call... oops. Fixes #661.
Fixed power computation bug leading to surplus energy consumption, closes #663.
Housekeeping (typos, formatting, ...)
Fixed power derp. For good now, I think.
Registering file system access event handler when running on a server, too, fixes #665.
Update oppm.lua to make it install itself from loot disk

Too many reports of OPPM not working due to the floppy being read-only.
Merge pull request #667 from Vexatos/patch-12

Update oppm.lua to make it install itself from loot disk
Fixed #668, wrong `toArray` being used by linked cards.
Merge branch 'master-MC1.7.10' of github.com:MightyPirates/OpenComputers into master-MC1.7.10
Update oppm.lua again.

Blame @rmellema.
Reworked `robot.durability()` implementation, closes #666.
It now returns a single number, the relative durability (0 = broken, 1 = no damage), using durability provider methods that can be registered via IMC `registerToolDurabilityProvider` (takes a single string, the name of the class+method, e.g. `com.example.OCInterop.getDurability`), returns a double, NaN if unsupported item stack. Added custom providers for IC2, RF, GT and TCon.
Merge pull request #671 from Vexatos/patch-13

Update oppm.lua again.