Allowing compilation for x86_64 platform.
Correct determination of number of threads and CPP flags on Mac.
Correct definition of NOGLUT (which is used by View classes instead of H2D_WITH_GLUT).
Correct inclusion of omp.h only if WITH_OPENMP is defined.
Correctly using HERMES_VISUALIZATION in 01-poisson test_example.
Compilation fixes for current Clang compiler on MacOSX.
Small correction of the output of Picard iteration.
CMake fix for MacOS X.
Placeholders for OpenMP functions for the case WITH_OPENMP = NO.
Fixing a minor compilation issue.
Using correct defines instead of magic numbers in filter.
Fixing allocation issue in Filter::get_pt_value().