C++ PATCH for c++/8316, 9315, 10136

[Jason Merrill]

People keep getting confused by the "choosing ..." pedwarn in joust.  This
is understandable, as the message doesn't read like an error, but is one
without -fpermissive.  This patch improves the wording so it should
hopefully be clearer, and also improves how the candidates are identified.

Tested i686-pc-linux-gnu, applied to trunk.  I'm also applying a patch to
3.2 and 3.3 which just changes the wording.

2003-03-18  Jason Merrill  <jason@redhat.com>

	PR c++/8316, c++/9315, c++/10136
	* call.c (print_z_candidate): Split out from...
	(print_z_candidiates): ...here.
	(joust): Use it.

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