File _multibuild of Package gcc

<multibuild>
  <package>arm-linux-gnueabi</package>
  <package>arm-none-eabi</package>
  <package>aarch64-linux</package>
  <package>avr</package>
  <package>mips-linux</package>
  <package>ppc-linux-gnueabi</package>
  <package>or1k-none-elf</package>
  <package>riscv64-none-elf</package>
  <package>riscv64-suse-linux</package>
  <package>xtensa-none-elf</package>
</multibuild>