Fix #1572: disable building with -march=native for 32 bit target platforms
Fix #1572: disable building with -march=native for 32 bit target platforms

bestrauc/seqan,bestrauc/seqan,xenigmax/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan,xenigmax/seqan,bestrauc/seqan,bestrauc/seqan,bestrauc/seqan,bestrauc/seqan,xenigmax/seqan,xenigmax/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan