fix bug : some false paths found in the contig graph due to RR edges (R edges not well re-read), removed R edges, using only FF edges
fix bug : some false paths found in the contig graph due to RR edges (R edges not well re-read), removed R edges, using only FF edges

GATB/MindTheGap,GATB/MindTheGap,GATB/MindTheGap