Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add a threadid to the ah_decode API.

This adds the current thread ID to each logged register and mark entry,
allowing for easier debugging of concurrent/overlapping NIC operations.

Add some more OS_MARK probes to the RX DMA setup/teardown code path.

I'm trying to debug the RX DMA path and help the ath9k guys with
"RX dma abort stuck" issue that both our drivers have.

Replace Id keyword with FreeBSD keyword and set the svn props correctly.
No functional change.

add FreeBSD property

import ath hal

virgin import of ath hal