* bfin/configure.in: New. * bfin/crt0.S: New. * bfin/Makefile.in: New. * bfin/syscalls.c: New. * bfin/aclocal.m4: Generate. * bfin/configure: Ditto. * configure.in: Add support for bfin-*-*. * configure: Regenerate. * syscall.h (SYS_argc): Define. (SYS_argnlen): Define. (SYS_argn): Define.