Streaming .tar.gz files requires less memory, as we don't need to
remember metadata about each file for the end of directory record.
Signed-off-by: Graham <gpe@openrs2.org>
I'm not sure if the auto-detection code works: I'm assuming that the new
format was introduced at the same time as the lengths flag in Js5Index,
but I haven't confirmed this.
Signed-off-by: Graham <gpe@openrs2.org>
This commit also changes the way the master index format detection
works, as the previous scheme could not distinguish VERSIONED from
WHIRLPOOL.
Signed-off-by: Graham <gpe@openrs2.org>