Class members are destroyed in the reverse order of their declaration
(like C++). The previous code destroyed members in declaration order,
which caused a use-after-free in Rance 9's T_Map class.
Added a test to verify the reverse destruction order.
The system.ExistsFile() system call returns 1 if a file or directory
exists, but returns 0 when the provided path ends with a directory
separator, regardless of whether a directory exists at that location.
This subtle difference in behavior caused problems in Pastel Chime 3.
Custom comparison functions for string arrays receive their arguments by
value. Create a copy of the strings before pushing them to the stack to
prevent them from being prematurely freed after the function call.
kichikuou