NewCamliFileSystem needs a client. Work on Issue 95.

Change-Id: I417d9d04398e734d88d3139a91309a8f0eb8084d
fs: cleanup

Change-Id: Iae3404afe5fc5cf0d83cc45e7822886bce25fe21
dev-cammount: make it start up again. needs auth env now.

Change-Id: If829a09f3fddee69ffb3839dfd8d0891e0862239
fs: move some common code to fs; create recent.go

Change-Id: I25c5e906988efecbabc266c407d9129e42993fb4