reverse a commit a6149c6dbb41: Set CONFIG_MULTIARCHDIR for cross compilers.

reverse a commit a6149c6dbb41: Set CONFIG_MULTIARCHDIR for cross compilers.

    Set CONFIG_MULTIARCHDIR for cross compilers.
    Chances a cross-compiler will find a working crt*.o
    in /usr/lib are more or less 0.

This commit breaks x86 / x86_64 compilres for linux. A solution for the crt*.o
must be discussed.
must be:
    # ./x86_64-tcc -vv
    tcc version 0.9.26 (x86-64, Linux)
    install: /usr/local/lib/tcc
    crt:
      /usr/lib64
    libraries:
      /usr/lib64
      /lib64
      /usr/local/lib64
    include:
      /usr/local/include
      /usr/include
      /usr/local/lib/tcc/include
    elfinterp:
      /lib64/ld-linux-x86-64.so.2

and with MULTIARCH we have:
    # ./x86_64-tcc -vv
    tcc version 0.9.26 (x86-64 Linux)
    install: /usr/local/lib/tcc/
    crt:
      /usr/lib/x86_64-linux-gnu ???????????????????
    libraries:
      /usr/lib/x86_64-linux-gnu
      /usr/lib                  ???????????????????
      /lib/x86_64-linux-gnu
      /lib                      ???????????????????
      /usr/local/lib/x86_64-linux-gnu
      /usr/local/lib            ???????????????????
    include:
      /usr/local/include/x86_64-linux-gnu
      /usr/local/include
      /usr/include/x86_64-linux-gnu
      /usr/include
      /usr/local/lib/tcc/include
    elfinterp:
      /lib64/ld-linux-x86-64.so.2

And CONFIG_MULTIARCHDIR don't handle C67.
On Linux x86 we have:
    # ./c67-tcc -vv
    tcc version 0.9.26 (C67, Linux)
    install: /usr/local/lib/tcc
    crt:
      /usr/lib
    libraries:
      /usr/lib
      /lib
      /usr/local/lib
    include:
      /usr/local/include
      /usr/include
      /usr/local/lib/tcc/include
    elfinterp:
      /lib/ld-linux.so.2