Fix configure errors with USE_PYTHON=OFF
Fix configure errors with USE_PYTHON=OFF

looooo/netgen,live-clones/netgen,looooo/netgen,live-clones/netgen,live-clones/netgen,looooo/netgen,looooo/netgen,live-clones/netgen,live-clones/netgen,looooo/netgen,live-clones/netgen,looooo/netgen