Revision 2688

Added in functMaxConstantOfIntegration support in the adaptive
parameter answer checking.  Also added a flag to the formula answer
checker that allows checking a formula up to a constant (for
integration problems).  This really just adds a new parameter to the
context and adds that to the formula, so there is nothing deep about
this.

	ANS(Formula("2x")->cmp(upToConstant=>1));

Finally, don't look for adaptive parameters if they aren't actually
used in the professor's formula (even if they are defined).