MFC r270710 and r270821:

• Update the OFED Linux Emulation layer as a preparation for a

hardware driver update from Mellanox Technologies.

• Remove empty files from the OFED Linux Emulation layer.
• Fix compile warnings related to printf() and the "%lld" and "%llx"

format specifiers.

• Add some missing 2-clause BSD copyrights.
• Add "Mellanox Technologies, Ltd." to list of copyright holders.
• Add some new compatibility files.
• Fix order of uninit in the mlx4ib module to avoid crash at unload

using the new module_exit_order() function.

Sponsored by: Mellanox Technologies