update the step to require that the lexer be 'flex' and that it's version is above a certain minimum (currently 2.5.33) or the entire configure process will fail
update the step to require that the lexer be 'flex' and that it's version is
above a certain minimum (currently 2.5.33) or the entire configure process will
fail


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@13365 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot