Log Message:
Changes 20050419:
- Mailslot support.
- Support for side mouse buttons (X buttons).
- More Richedit improvements.
- Loading of Windows registry files disabled for now.
- Many code cleanups.
- Lots of bug fixes.

Changes 20050524:
- Many MSI improvements.
- More features in the file manager.
- Better compatibility for Winelib import libraries.
- SGML documentation moved out of the source tree.
- Header files cleanups.
- Lots of bug fixes.