fs: add TextEdit mutable file system test

Change-Id: I98c06aaec98e053715a7dc8799ae568be6819acb
dev-server: use updatelibrary.go to update closure lib

This change also removes misc/get_closure.pl and updates
the Makefile accordingly.

http://camlistore.org/issue/140

Change-Id: I508271cee24eb20d8391cb3d84e1201ce3ef567e
Merge "dev-server: use updatelibrary.go to update closure lib"
dev-server: remove get_closure.pl require

Change-Id: I312577b69bb6b67196056361168c1ddfd27f90fa
fs: another failing test

Change-Id: If9d3a87aa67415846a7b7a1a20c4cef3cd9c1f66