The buffer enters into a late state after its data has been read out.  Any data for that cycle that arrives is considered late, until the next cycle comes in, at which point it is marked as dropped.

This updates the late state when data is copied out of the buffer and clears it when a new gps second/cycle is accepted in.

Closes #119.

This is the daqd memory format, daq_multi_cycle_data_t in daq_core.h.

Cds_pub_sub now understands input from rmipc:// (FE mbuf inputs) and output to daqm:// (daqd memory buffers, daq_multi_cycle_t in a mbuf).

Created cds_pub_sub from cps_recv
Added a sub plugin for the rmIpcStr based mbufs from the FE systems.

cps is cds pub sub

Ran clang format.

Introduce a make_unique place holder for C++11 support.

Added some EPICS output to sub_recv.