[Bug testsuite/66530] libstdc++ testsuite links to incorrect shared libstdc++ library

[jenny.hyphen.fa at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66530

--- Comment #8 from Jennifer Yao <jenny.hyphen.fa at gmail dot com> ---
I know this is horribly belated, but I *just* got around to testing the patch
proper, and I'm afraid to say that it does not appear to work.

(My last comment verified that setting PATH instead of LD_LIBRARY_PATH worked
on Cygwin using a separate test program. I did not test the patch then.)