added owner uid/gid properties
mc.create accepts owner uid/gid

all tests written to use const OWNER_CREDS in all tests with mc.create
property 'owner' added to combine uid/gid requests
all uid/gid requests pull from mc.property

except mc.start, which expects uid/gid as a required arg
memoized fs.stat for uid/gid
Revert "memoized fs.stat for uid/gid"

This reverts commit 3a96e5b341f286e260d2a58e40a42f4315bfc9b5.
ensured all uid/gid returned before subsequent call

put all uses of uid/gid in callback from fs.stat.
Merge pull request #6 from hexparrot/auth

Auth