e2fsck: read only parameter incorrectly compared

Don't check for lost+found in read only mode.

Change-Id: Ib5861f615b60cf5d0836af73539dd53c70638de5
lib/uuid: make a static library also

Change-Id: Idb36204f2d8cadb9564db445d5301f705ce4d043
Signed-off-by: JP Abgrall <jpa@google.com>