Show of hands, how many set USE_NSEC

["Shawn O. Pearce" <spearce@spearce.org>]

How many users really build their Git with USE_NSEC=1?

I'm suspecting a status issue in jgit caused by jgit honoring a
millisecond resolution on file modification timestamps, and the
underlying filesystem supporting at least a 1/2 second (or finer)
granularity, but C Git was built without USE_NSEC so it only honors
1 second granularity.

This can cause jgit to think a file is locally modified as the
mtime has data in the tv_nsec field, but C Git set that to 0 in
the index as USE_NSEC wasn't enabled at build time.

I'm trying to come up with a sane way for jgit to realize it should
truncate the milliseconds out of a timestamp before it comes to
the index record.

-- 
Shawn.