Detect optimized library builds (& output error or substitute correct library?)

[serhei]

Florian Weimer points out that if ldd on the local machine selects an optimized library build,
this optimized library may not work on the hardware where the container is running.

According to man ld.so(8) the optimized builds are placed in clearly delineated
hardware capability directories,
so this situation could be detected. Then we could output a warning
or perhaps even substitute a non-optimized version of the library.

I haven't seen this issue in the simple scenario of copying gdbserver, strace, etc.
from a Fedora development machine to a RHEL UBI container. But on more unusual
combinations of local machine / container it may occur.