Bug#741543: When build for mips64el, the default target is mipsn32el

[Richard Sandiford <rdsandiford@googlemail.com>]

Yunqiang Su <wzssyqa@gmail.com> writes:
> --- gcc-4.9-4.9-20140322-new.orig/src/gcc/config.gcc    2014-03-25
> 13:03:45.948992657 +0000
> +++ gcc-4.9-4.9-20140322-new/src/gcc/config.gcc 2014-03-25
> 13:06:12.314278663 +0000
> @@ -1963,6 +1963,11 @@
>         tmake_file="${tmake_file} mips/t-linux64"
>         tm_defines="${tm_defines} MIPS_ABI_DEFAULT=ABI_N32"
>         case ${target} in
> +               *gnuabi64*)
> +                       tm_defines=$(echo ${tm_defines}| sed
> 's/MIPS_ABI_DEFAULT=ABI_N32/MIPS_ABI_DEFAULT=ABI_64/g')
> +                       ;;
> +       esac
> +       case ${target} in
>                 mips64el-st-linux-gnu)
>                         tm_file="${tm_file} mips/st.h"
>                         tmake_file="${tmake_file} mips/t-st"

Sorry, should have noticed this last time, but for compatibility reasons
we need to use `...` rather than $(...).  No need to repost the patch with
that change -- I'll just make it locally before committing -- but please
give an idea how it's been tested.

Thanks,
Richard