jca a7d88044cd Mark BROKEN on sparc64 ...

From the error log:
  build/genmddeps /usr/ports/pobj/xtensa-elf-gcc-6.3.0/gcc-6.3.0/gcc/common.md /usr/ports/pobj/xtensa-elf-gcc-6.3.0/gcc-6.3.0/gcc/config/xtensa/xtensa.md > tmp-mddeps
  Illegal instruction (core dumped)

2019-05-29 20:33:34 +00:00

..

binutils

…

gcc

Mark BROKEN on sparc64

2019-05-29 20:33:34 +00:00

Makefile

…

Makefile.inc

…