Don't install private libexecinfo headers
Add $FreeBSD$ tag for user-facing header
Add svn:keywords property
Include the calling context in the mail subject, if any.

More concretely, periodic security scripts defaults to being
called from daily ones -- daily context -- so the mail subject
will now be "${HOST} daily security run output" instead of
"{HOST} security run output".

If you switch the period of some security checks to weekly, you
will receive another email "${HOST} weekly security run output".
sys/dev/xen/blkback/blkback.c:
	Initialize the request id for requests in xbb_get_resources()
	instead of its previous location in xbb_dispatch_io().  This
	guarantees that all request types (e.g. BLKIF_OP_FLUSH_DISKCACHE)
	have the front-end specified id recorded.

Submitted by:	Roger Pau Monné
Sponsored by:	Citrix Systems R&D