Moved dynamic libraries are never bumped, so old copies should never
stay around. Therefore, put any MOVED_LIBS from ObsoleteFiles.inc under
the list-old-files target so they may be deleted, even if users run
"make delete-old-files", but do not run "make delete-old-libs". (The
latter target is sometimes postponed, for example due to installed ports
still requiring the older libraries.)
In particular, this avoids keeping around an old /usr/lib/libc++.so.1
after a new version has been installed in /lib, which could lead to
"Undefined symbol" errors in certain circumstances.
PR: 272642
MFC after: 3 days