prevent walking avatar from bouncing on floor
Don't repeat check for non-zero collision groups
make transaction amounts and balances signed 64-bit
fix domain-server pending credits to actually be in credits
Enable local gravity when there is a floor nearby.
merge upstream/master into andrew/inertia
don't use powf for credit conversions
fix a mistyped constant
fix an implicit cast to float
fix another implicit float cast
squared force on thrust controller
Merge pull request #2916 from birarda/master

make transaction amounts and balances signed 64-bit
Merge pull request #2919 from AndrewMeadows/inertia

turn on gravity when there is a voxel floor to stand on
Merge pull request #2918 from PhilipRosedale/master

Ability to move both slowly and fast with hand controllers