Changes to g++.exp prevent testing multiple ABIs on irix

[Billinghurst, David (CRTS)]

These recent changes to gcc/testsuite/lib/g++.exp prevent me from testing
multiple ABIs on irix6.5

Fri Nov  3 13:32:14 2000  Mark P Mitchell  <mark@codesourcery.com>

	* lib/g++.exp (g++_set_ld_library_path): New function.
	Use it to set LD_LIBRARYN32_PATH and LD_LIBRARY64_PATH

I could run the testsuite on irix6.5 on both -n32 and -64 ABIs by setting
the environment variables LD_LIBRARYN32_PATH and LD_LIBRARY64_PATH
appropriately.  Now I can't.  See
http://gcc.gnu.org/ml/gcc-bugs/2000-11/msg00463.html


If we can't set LD_LIBRARYN32_PATH and LD_LIBRARY64_PATH correctly, I'd
prefer they weren't set at all.  This is the case for the Objective C tests.

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research Centre
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Email:	David.Billinghurst@riotinto.com