Fixed #1000: Can't connect to a HPX application running with the MPI parcelport from a non MPI parcelport locality. The connecting application needs to explicitly disable the mpi parcelport, though (--hpx:ini=hpx.parcel.mpi.enable=0)
Improving fix for #1000, no command line option is needed anymore
Partially fixing future.wait/wait_for/wait_until
Fixed #999: Optimize hpx::when_n
Fix compilation problems
Changing error code names for better conformance with the C++ standard
Adding more test cases to zero copy serialization test
Fixed mismatched class/struct in forward declaration