NOTE: the libc.so and libdl.so are not part of the standard JDK; 
they are from the regular Linux distribution.

Here's what versions the Linux libraries are derived from: 
lrwxrwxrwx   1 root     root           14 Jan  5 20:05 /lib/libdl.so -> libdl.so.1.8.5
lrwxrwxrwx   1 root     root           14 Jan  5 20:05 /lib/libdl.so.1 -> libdl.so.1.8.5
-rwxr-xr-x   1 root     root         5408 Nov  7  1996 /lib/libdl.so.1.8.5
lrwxrwxrwx   1 root     root           19 Dec 28 20:57 /usr/lib/libc.so -> /lib/libc.so.5.4.13
