Revert "dyna_salt.  Use 4 param COMP_SIZE macro"
Revert "rar_fmt: removed numerous warnings, and added comments where we can not handle large file size"

This reverts commit 5560b2f61b498cc1044a92465dd197c9c5d35683.
This reverts commit b74774582339ec79bcd6fdf9ec06301b3e96cbba.