Do away with -DOMP

amgprec/impl/aggregator/MatchBoxPC.cpp

@@ -72,8 +72,7 @@ void dMatchBoxPC(MilanLongInt NLVer, MilanLongInt NLEdge,
         double tmr = MPI_Wtime();
     #endif
 
-#define OMP
+#ifdef OPENMP
-#ifdef OMP
         dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(NLVer, NLEdge,
 							   verLocPtr, verLocInd, edgeLocWeight,
 							   verDistance,  Mate,

amgprec/impl/aggregator/algoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP.cpp

@@ -1,5 +1,5 @@
 #include "MatchBoxPC.h"
-#ifdef OMP
+#ifdef OPENMP
 // ***********************************************************************
 //
 //        MatchboxP: A C++ library for approximate weighted matching

amgprec/impl/aggregator/processExposedVertex.cpp

@@ -1,5 +1,5 @@
 #include "MatchBoxPC.h"
-#ifdef OMP
+#ifdef OPENMP
 void PARALLEL_PROCESS_EXPOSED_VERTEX_B(MilanLongInt NLVer,
                                        MilanLongInt *candidateMate,
                                        MilanLongInt *verLocInd,

amgprec/impl/aggregator/queueTransfer.cpp

@@ -1,5 +1,5 @@
 #include "MatchBoxPC.h"
-#ifdef OMP
+#ifdef OPENMP
 void queuesTransfer(vector<MilanLongInt> &U,
                     vector<MilanLongInt> &privateU,
                     vector<MilanLongInt> &QLocalVtx,