The loc one (shift-alt-G) was same as 'remove selected from active group'
action... Clear delta transform is not a common operation, so we can
live without a default shortcut for it.
Note that using same key (G) in same space for two completely different
kind of operations is probably a rather bad thing, nice topic for future
keymap work. ;)
Probably nice to have in 2.79a.
We did not update them for really long time and the currently used
hashes are quite old and probably wouldn't work without manually
updating all submodules.
Not as if it's something totally crucial (we ask to update submodules
all the times and that's what `make update` does) but updating hashes
will save some cloning/checkout time.
