Fixed placement of blocks when using the angle upgrade near water(like) blocks. Closes #235.
Fixed potential error when saving buffered filesystems, introduced with properly seekable file handles.
Robots now make a 'splash' noise when moving through water/fluids, instead of a block breaking one.
Merge branch 'master' of github.com:MightyPirates/OpenComputers into MC1.7

Conflicts:
	src/main/scala/li/cil/oc/common/tileentity/Robot.scala