Assign UDF File Entry extents appropriately.
Assign UDF File Entry extents appropriately.

That is, when we are assigning them, make sure to walk
all of the linked records and set the locations appropriately

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

clalancette/pycdlib,clalancette/pyiso