prov/psm: allow "any source" address in av table

An all-0 address can be used in recvfrom calls for receiving from
any source. Not valid for send calls.

Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
prov/psm: use FI_MR_KEY flag for user requested mr key

Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
prov/psm: rename all the remaining 'eq' references to 'cq'

Clean up the name space in preparation of adding the new eq
support.

Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
prov/psm: file renaming related to eq->cq change

Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Merge branch 'master' of ssh://github.com/ofiwg/libfabric
Merge pull request #113 from j-xiong/master

prov/psm: av, mr updates; finish off the eq->cq renaming