LibraryReport is a Tcl script that attempts to report on the status of
shared libraries in the system.
It locates libraries using the output of 'ldconfig -r' to find
directories containing libraries, and then performs a recursive
descent of the entire filesystem heirachy looking for dynamically
linked executables and recording the libraries that they use.
After scanning, a report is produced listing used libraries and the
executable(s) that use them, and seperately listing unused libraries.