Boost includes sys/param.h on FreeBSD, which in turn defines setbit()
macro. This macro is conflicting with open_query::judy_bitset::setbit().

Reordered includes such that oqgraph_judy.h never sees this macro.
Also removed duplicate includes of graphcore-config.h, which is included
by graphcore-graph.h/oqgraph_shim.h/oqgraph_thunk.h.