quadcc: Add a warning if error tolerance is not met (bug #62412) * quadcc.cc (Fquadcc): Add a warning message that triggers if absolute or relative tolerance has not been met AND an error output has not been requested. Define nargout variable for error conditional calculation. Update documentation to explain new behavior. Add BIST test for bug #62412. Adjust tolerance of BIST tests so they do not emit warning under default 'test quadcc' usage. Change BIST test using inline function not to emit a warning about using an inline function.