[PATCH 0/6] Minor fsmonitor bugfixes, use with `git diff`

[Alex Vandiver <alexmv@dropbox.com>]

This cleans up some mistakes I introduced in my previous series, and
switches `git diff` to use the fsmonitor data.

I've noticed that `git checkout HEAD` drops the fsmonitor data, which
surprises me -- the following patch "fixes" that but broke tests, so
there's something I clearly don't understand yet going on here:

--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1262,6 +1262,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
        o->result.timestamp.nsec = o->src_index->timestamp.nsec;
        o->result.version = o->src_index->version;
        o->result.split_index = o->src_index->split_index;
+       o->result.fsmonitor_last_update = o->src_index->fsmonitor_last_update;
        if (o->result.split_index)
                o->result.split_index->refcount++;
        hashcpy(o->result.sha1, o->src_index->sha1);


 - Alex