build failure with pari master

[videlec]

With PARI/GP at 0cf35279e the build fails with

Error compiling Cython file:
------------------------------------------------------------
...
            _d = gen_0
        else:
            d = objtogen(d)
            _d = (<Gen>d).g
        sig_on()
        cdef GEN _ret = alglathnf(_al, _m, _d)
                                ^
------------------------------------------------------------

cypari2/auto_gen.pxi:1556:33: Call with wrong number of arguments (expected 2, got 3)

Error compiling Cython file:
------------------------------------------------------------
...
            
            [6 18 2 3 9 1]
        '''
        cdef GEN _E = E.g
        sig_on()
        cdef GEN _ret = ellisomat(_E, p, fl)
                                ^
------------------------------------------------------------

cypari2/auto_gen.pxi:6214:33: Call with wrong number of arguments (expected 2, got 3)

Error compiling Cython file:
------------------------------------------------------------
...
        rho = objtogen(rho)
        cdef GEN _rho = (<Gen>rho).g
        if not precision:
            precision = default_bitprec()
        sig_on()
        cdef GEN _ret = lfunartin(_nf, _gal, _rho, n, precision)
                                ^
------------------------------------------------------------

cypari2/auto_gen.pxi:10735:33: Call with wrong number of arguments (expected 4, got 5)

[videlec]

Would be fixed by #28