earlier today) to "readlink -f", because "realpath" does not exist
on some systems (e.g., CentOS). "readlink" seems to be more
universally available. Noticed that the ext2spice and ext2sim
scripts use /bin/sh instead of /bin/bash, which would cause problems
with some systems where sh != bash.
By having the build system put in a relative path rather
than an absolute path. Unfortunately, make does not support
computing relative paths manually, so a small bash script is
needed that will do this for us.
Tim Edwards
Keno Fischer