Final stage with full comments added

fsck implemented, able to check for block mismatch

full non-outstanding part and outstanding part command support

Available commands:
ls
info
cat
export
tree
find
createFile (or touch)
insertFile (or import)
createDirecotory (or mkdir)

full non-outstanding part and outstanding part command support

Available commands:
ls
info
cat
export
tree
find
createFile (or touch)
insertFile (or import)
createDirecotory (or mkdir)

Non-outstanding part finished
createFile and createDirectory command finished
lots of memory leak bug fixed