assertify h8300 target

[Nathan Sidwell]

This patch assertifies the h8300 target files.  I built an h8300-none-elf
cross compiler and built a newlib for same to test.  Although I did get
a large number of failures, I didn't get any different failures with
and without the patch. (Actually, I got one extra failure due to a timed
out test at -O3 -unroll-all=loops -inline, which I believe was caused
by the change in machine load at the time.  I manually ran that test
subsequently, and all was ok.)

ok?

nathan
-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::     CodeSourcery LLC
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk

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