Beta 25: (RC3. Release date next week. Really.)

- CDFS file/directory search now uses simple hash table for better performance.
- Fixed crash introduced in b23 if filesystem was asked to open directory that couldn't be opened.
- Directory filesystem host memory leak fixed (leaked few bytes when filehandle was closed). Very old bug.
- Autodetect old-style geometry if >512M OFS/FFS partition hardfile was created with older UAE version.
- Some rare DMS files didn't unpack properly.
- Possible fix for diagonal artifact in some D3D filter modes.