It looks like compilation of 32 bit platforms is failing due to a
missing field. It looks to me that for some reason r26626 deleted
hdr_segkey in ompi/mca/osc/rdma/osc_rdma_header.h which is used in
the macro OMPI_OSC_RDMA_RDMA_INFO_HDR_NTOH and HTON. Is there a
reason that hdr_segkey was removed, if so more changes are needed.