Make linked_records a list instead of a dictionary.
Make linked_records a list instead of a dictionary.

It is slightly faster to look things up in a list, so use
that here.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@gmail.com>

clalancette/pycdlib,clalancette/pyiso