Add minus -R option to localize aplicon over one of the sequence database.

This option add two column on the right of the output table with the primers location 
and the barcode sequence (small patch)

git-svn-id: https://www.grenoble.prabi.fr/svn/LECASofts/ecoPrimers/trunk@220 60f365c0-8329-0410-b2a4-ec073aeeaa1d

src/ecoprimer.c

@@ -239,6 +239,8 @@ void printapair(int32_t index,ppair_t pair, poptions_t options)
 
 
 	}
+	else
+		printf("\t\t");
 
 	printf("\n");