[SHELL32]

- Rename SHELL32_BindToChild to SHELL32_BindToFS. Do not let it be used for guid items any more. Split SHELL32_GetCLSIDForDirectoryout of it and call it only when needed.
- Fix callers to use SHELL32_BindToGuidItem for guid items.
- Fix a bug in CFSFolder which marked folder items as files when a binding context was used.

svn path=/trunk/; revision=68885