[REPOST] MT-safe exception diffs for 971207

[Teemu Torma]

    From:  Jason Merrill <jason@cygnus.com>
    Date:  12 Dec 1997 00:18:07 -0800

    Actually, I got over-eager and fixed these things myself, 
    so you don't need
    to worry about them.  I also moved the call to the top of the function,
    since the first use might be in a conditional.

Please note that the USE insn is already at the beginning (after last parm
insn), and emit_eh_context emits the call just before the USE insn. When
the compiler compiles inline functions as standalone at the end of the
compilation, last parm insn is not updated and can not be used.

Teemu