[PATCH] rtld: Add --no-default-paths option

[Joseph Myers]

As a new user-visible feature, the patch should add a NEWS entry (under 
"Major new features" for 2.34).

In principle, it would be good to use this option for running all tests in 
the glibc testsuite.  But given the complication that libgcc_s and 
libstdc++ shared libraries would then always need copying to the build 
directory before running tests (at present that's only needed if they're 
in directories the dynamic linker doesn't search by default, I think), and 
that in some configurations it would make sense for the glibc build system 
to copy those libraries but in other cases it may be more appropriate to 
copy them from outside the build system, it's probably best not to include 
that change in this patch.

-- 
Joseph S. Myers
joseph@codesourcery.com