Replace RegionFile - improve performance - final where applicable, remove redundant array + seek calls

Signed-off-by: Ross Allan <rallanpcl@gmail.com>
Correctly normalize modcontainer locations.

Signed-off-by: Ross Allan <rallanpcl@gmail.com>
Revert RegionFile changes, prepatch correctly on first run

Signed-off-by: Ross Allan <rallanpcl@gmail.com>