How can I extract the binaries out of a pkg file without adding them to the default locations under /usr
or other default folder. I want to add this package under my own directory /our_own_directory/our_own_prefix_specific_for_this_package
so it is self contained, easy to know what is going on, and is tied to our application directories instead of OS directories.
Also, I don't want to touch the global database of installed packages.