* configure: Add microblaze-*.* (not regenerated).
       * configure.ac: Likewise.
       * microblaze/config.in: New.
       * microblaze/configure: Generate.
       * microblaze/configure.ac: New.
       * microblaze/interp.c: New.
       * microblaze/Makefile.in: New.
       * microblaze/microblaze.h: New.
       * microblaze/microblaze.isa: New.
       * microblaze/sim-main.h: New.
       * microblaze/sysdep.h: New.