this .h file, but only those. Necessary fixes to a lot of .c files,
started optimizing "windows.h" away from some of them. Moved
GetCurrentTask prototype to wine/winbase16.h.
- clean DllReferenceCount, better DllMain()
- dynamically linking LookupIconIdFromDirectoryEx32 and
CreateIconFromResourceEx32 to USER32
- moved guid's instances to new file shellguid.c
- implemented ShellExecuteEx32W