FYI: more i[3456]86-*-netbsdelf* changes

[J.T. Conklin]

ELF based NetBSD/i386 systems appear to use the standard ELF ABI, so the
USE_STRUCT_CONVENTION macro defined in i386/tm-nbsd.h must be overridden.

        * configure.tgt: Add pattern for i[3456]86-*-netbsdelf*.
        * config/i386/nbsdelf.mt: New file.
        * config/i386/tm-nbsdelf.h: New file.

        * config/i386/tm-nbsd.h: change include of tm-nbsd.h to
        the more explicit config/tm-nbsd.h.

This new port now has respectible testsuite scores:

                === gdb Summary ===

# of expected passes            6164 
# of unexpected failures        11
# of unexpected successes       33
# of expected failures          156
# of untested testcases         18
# of unsupported tests          1 


        --jtc

-- 
J.T. Conklin
RedBack Networks