For about half the ports, we don't need a subdir configure script.
They're using the config/default.m[ht] rules, and they aren't doing
any unique configure tests, so they exist just to pass top-level
settings down to create the arch Makefile. We can just as easily
do that from the top-level Mkaefile directly and skip configure.
Most of the remaining configure scripts could be migrated up to
the top-level too, but that would require care in each subdir.
So let's be lazy and put that off to another day.
From Catherine Moore, Michael Meissner, Richard Sandiford:
* configure.in: Support frv*-*-*.
* frv/Makefile.in: New file.
* frv/configure: New file.
* frv/configure.in: New file.
* frv/crt0.S: New file.
* frv/fstat.c: New file.
* frv/getpid.c: New file.
* frv/isatty.c: New file.
* frv/kill.c: New file.
* frv/print.c: New file.
* frv/putnum.c: New file.
* frv/sbrk.c: New file.
* frv/sim-close.S: New file.
* frv/sim-exit.S: New file.
* frv/sim-inbyte.c: New file.
* frv/sim-lseek.S: New file.
* frv/sim-open.S: New file.
* frv/sim-read.S: New file.
* frv/sim-time.c: New file.
* frv/sim-unlink.S: New file.
* frv/sim-write.S: New file.
* frv/stat.c: New file.