[MERGE] Faster commit

[John Arbash Meinel]

John Arbash Meinel has voted +1 (conditional).
Status is now: Conditionally approved
Comment:
Changing is_executable() may actually break some things like bzr-gtk.

So at the very least we should have a "SURPRISES" or "NOTES WHEN 
UPGRADING" comment about this specific API change so that people 
implementing plugins have an idea it might break for them.

Otherwise, I'm +1 on this.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C4664328E.4090809%40internode.on.net%3E