Building packages on Tanglu 4 (usrmerged system!) system makes dpkg-shlibdeps fail
sometimes, because it
tries to find a library in the wrong path.
Example error message:
dpkg-shlibdeps: error: no dependency information found for /usr/lib/ld-linux.so.2
This is an issue which we should ideally solve in dpkg-shlibdeps, by making it search for packages shipping the library in /lib if no pkg was found having it in /usr/lib.