Bug#845461: gcc-6: Please build with --with-cpu=ultrasparc on sparc

[jose.marchesi@oracle.com (Jose E. Marchesi)]

    >     Currently, rebootstrap fails on sparc-linux-gnu because the gcc-6
    >     package no longer builds with --mcpu=ultrasparc on this target.
    >     This was previously with the sparc-force-cpu.diff patch which
    >     got removed while fixing the multilib issue on sparc64.
    > 
    > What is the issue with GCC 6 and --mpu=ultrasparc?
    
    We want to make sure that gcc-6 is built with --with-cpu=ultrasparc on
    32-bit sparc-linux-gnu (which is currently only present in Debian
    rebootstrap [1]). The question is whether my suggested patch to
    do that is correct.

Ah, I thought you said that GCC 6 was not building anymore with
--mcpu=ultrasparc due to some bug.  You mean that the debian package is
no longer using that option.