Reimplement SHFileOperation in Unicode, based on the work of Dietrich
Teickner.

diff --git a/include/shellapi.h b/include/shellapi.h
index 907368d..1644a6b 100644
--- a/include/shellapi.h
+++ b/include/shellapi.h
@@ -176,6 +176,7 @@
 #define FOF_SIMPLEPROGRESS         0x0100
 #define FOF_NOCONFIRMMKDIR         0x0200
 #define FOF_NOERRORUI              0x0400
+#define FOF_NOCOPYSECURITYATTRIBS  0x0800
 
 typedef WORD FILEOP_FLAGS;