MLBEDSW-9862: Implement updated 2Gb file handling
Changes 2Gb file handling from a two-pass approach to a single-pass approach with filesize estimation.
- Additional improvements to massively reduce hash-times for large buffers. Needed for handling large files in a reasonable timeframe.
Signed-off-by: Philip Hall philip.hall@arm.com Change-Id: I83a36d905b3dbfb00fc2e1c46f691e43ba2d757f