Merge branch 'jc/add-2.0-delete-default' (early part) into next
In Git 2.0, "git add pathspec" will mean "git add -A pathspec". If
you did this in a working tree that tracks dir/lost and dir/another:
$ rm dir/lost
$ edit dir/another
$ git add dir
The last step will not only notices and records updated dir/another,
but also notices and records the removal of dir/lost in the index.
Start training the users for this change to say --no-all when they
want to ignore the removal to smooth the transition hump.
* 'jc/add-2.0-delete-default' (early part):
git add: start preparing for "git add <pathspec>..." to default to "-A"
builtin/add.c: simplify boolean variables