tests/test-mq-qimport.out

dirstate: refactor granularity code, add a test

- rename option dirstate.granularity
- move option reading into .write()
- add a simple test

% build diff with CRLF
adding b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% qimport CRLF diff
adding b.diff to series file
applying b.diff
Now at: b.diff