gcc-8-20180225: "go" breaks building OpenMP

[Jakub Jelinek]

On Fri, Mar 09, 2018 at 05:15:16PM +0100, Siegmar Gross wrote:
> there are differences in the log files.

Toplevel configure.ac has:
# Disable libgo for some systems where it is known to not work.
# For testing, you can easily override this with --enable-libgo.

section, clearly
    nvptx*-*)
        noconfigdirs="$noconfigdirs target-libgo"
        ;;
belongs in there too.  libgo needs a lot of porting and it hasn't
be done either for nvptx, nor for newlib, and it is a question if it is
portable to nvptx-none at all.

	Jakub