Optimized include/*.h: (recursively) include all headers needed by
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.

dlls/shell32/shellole.c

diff --git a/dlls/shell32/shellole.c b/dlls/shell32/shellole.c
index 3887a44..3ec96a0 100644
--- a/dlls/shell32/shellole.c
+++ b/dlls/shell32/shellole.c
@@ -8,15 +8,17 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include "debug.h"
-#include "objbase.h"
+#include "winreg.h"
 #include "winerror.h"
+#include "objbase.h"
 #include "winversion.h"
 
 #include "shlguid.h"
 #include "shlobj.h"
 #include "shell32_main.h"
 
+#include "debug.h"
+
 /*************************************************************************
  *
  */