add config section for upcoming ConnectiX4 card

cmr=v1.8:reviewer=ompi-rm1.8
common/verbs: added a call to ompi_ibv_free_device_list.

the ompi_common_verbs_find_ports function had a call to
ompi_ibv_get_device_list, but not to ompi_ibv_free_device_list.

fixed by Alina, reviewed by Vasily/Mike.
cmr=v1.8:reviewer=ompi-rm1.8
Commit upstream ROMIO fix: dbad7873926a75adbff0fd0140ae321412f70d66

ROMIO code assumes all processes will use the same ROMIO driver.  we
were not reaching the "find a common file system" logic when NFS was
enabled, everyone stat-ed the file system without errors, but some
processees found a different file system (like if some processes are
writing to NFS and others to UFS)

See discussion beginning here:
http://lists.mpich.org/pipermail/discuss/2014-March/002403.html

Tested-by: Jeff Squyres <jsquyres@cisco.com>

Submitted by Rob Lathan, reviewed by Jeff Squyres

cmr=v1.8:reviewer=ompi-rm1.8