suppress #pragma omp in .h file when compiling without openmp
suppress #pragma omp in .h file when compiling without openmp

dsroche/flint2,jpflori/flint2,jpflori/flint2,wbhart/flint2,wbhart/flint2,wbhart/flint2,dsroche/flint2,jpflori/flint2,dsroche/flint2,fredrik-johansson/flint2,fredrik-johansson/flint2,fredrik-johansson/flint2,jpflori/flint2,dsroche/flint2