Refactor array versions of wait*, cancel*, poll* in request.h.
Refactor array versions of wait*, cancel*, poll* in request.h.


git-svn-id: 4e7379b20b57f8e3dde5a0b7363f233184647162@1475 4e380d45-d1fd-0310-85a7-d18ec86df0ad

sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp