[Bug go/85429] Several gotools tests FAIL with Solaris as

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85429

--- Comment #10 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 44043
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44043&action=edit
proposed patch

Here's what I came up with: tested on i386-pc-solaris2.11 and
sparc-sun-solaris2.11,
both with as and gas.  All exclude-related gotools failures are gone.