Why does CI 1.70 support libraries subfolder ?

[eluser]Unknown[/eluser]
Hi everyone,

I a CI newbie.

When I use CI 1.6, I wonder why CI does not support subfolder in application/libraries folder, and then, I know that the goal of this folder to overwrite exist System Libraries of CI.

And now, CI support subfolder of libraries in 1.7 version.

Can you tell me what purpost of this action is ?

Thanks for all.