Added skeleton declarations for mount and unmount
Fixed some small errors in FileSystem
Initial implementation for mount
Added initial implementation for unmount
Added test for mount/unmount/blockify
Fixed layer 2 calls in mount test to fit with fuse changes
Removed duplicate Makefile target
Fixed UINT to INT in mount
trying to fix owner and permission, crashes when adding new fields into INode.h
Merge branch 'mount' of https://github.com/Weil0ng/cs270 into mount

Conflicts:
	Makefile

resolve conflict
changed layer0 to file op, diskFile is now the file-backed simulated disk