fixed bug in swapping l<r to r>l (same for <=,>=,>)
fixed bug in swapping l<r to r>l (same for <=,>=,>)

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb