[ale] Mixing Debian versions

[dcorbin at machturtle.com (David Corbin)]

I have a debian stable system.  I'd like to keep it "stable" as much as 
possible, but I need some libraries from testing/unstable (more modern 
versions). 

I know that apt supports "pinning", and mixing various version in various 
ways, but I've never quite grasped how it works well enough to be successful 
with it.

How can I say, "use stable for everything", except for this pacakge or that 
package that I need from "testing". (and ideally, no more updates beyond 
version X).

Thanks
-- 
David Corbin <dcorbin at machturtle.com>