[Maxima] Testsuite Failure in today's CVS head build

[David Ronis]

I just tried building the current HEAD sources on a i686-linux-gnu box
(been doing this for years).  

The testsuite shows a new failure:

                                Running tests in rtestsum: 
                                ********************** Problem 287
                                ***************
                                Input:
                                ev(sum(binomial(1 + n, k), k, 1, n),
                                simpsum)
                                
                                
                                Result:
                                 n + 1
                                2      - 2
                                
                                This differed from the expected result:
                                           1 + n
                                - 3 - n + 2
                                
Actually, I believe maxima's computed result is correct.