make sure we find the (correct) readline.h, even if a non-standard location is given via --with-readline
make sure we find the (correct) readline.h,
even if a non-standard location is given via --with-readline

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