Due to shell portability issues (which is to say shell scripts are not

Due to shell portability issues (which is to say shell scripts are not
portable -- think Windows), convert elf2flt to C code.

I've updated this code base to the latest elf2flt tree and actually done
some basic tests -- building the three Blackfin tuples (ELF, FLAT, FDPIC)
and running programs on my Blackfin boards.  This process found errors in
the original implementation as well as some of the cleanups I did.

Signed-off-by: Nathan Sidwell <nathan@codesourcery.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>