Something funny is going on when --without-orte, so revert the orte/Makefile.am for now while we try to figure it out

Refs #4368
Add an internal ompi error code for RMA sync errors.

Dave Goodell correctly pointed out that it is unusual to return MPI
error classes from internal ompi functions. Correct this in the RMA
case by adding an internal error code to match MPI_ERR_RMA_SYNC.

This does change OMPI_ERR_MAX. I don't think this will cause any
problems with ABI.

cmr=v1.7.5:reviewer=jsquyres
Fix an MPI-3 compliance buglet - MPI_Info_set should now use "const" qualifiers on the key and value parameters

cmr=v1.7.5:reviewer=jsquyres