is PHYSFS_setSaneConfig() mandatory?

[Per Inge Mathisen]

In version 1.0.1, it looks as though PHYSFS_setSaneConfig() is
mandatory. Is this the case?

The reason why I ask, is beause PHYSFS_setWriteDir() does not create
the directory that is given it, contrary to what the documentation
says, and you cannot use PHYSFS_mkdir() before the write directory is
set...

I would very much like to be able to avoid PHYSFS_setSaneConfig(),
since I want a different write directory, and would like to avoid
PHYSFS_setSaneConfig() writing its own in addition.

  - Per