shell32: Add the SHCreateDirectoryEx() macro.

include/shlobj.h

diff --git a/include/shlobj.h b/include/shlobj.h
index df3a959..a608a7e 100644
--- a/include/shlobj.h
+++ b/include/shlobj.h
@@ -1263,6 +1263,7 @@
 DWORD WINAPI SHCreateDirectory(HWND, LPCVOID);
 int WINAPI SHCreateDirectoryExA(HWND, LPCSTR, LPSECURITY_ATTRIBUTES);
 int WINAPI SHCreateDirectoryExW(HWND, LPCWSTR, LPSECURITY_ATTRIBUTES);
+#define    SHCreateDirectoryEx WINELIB_NAME_AW(SHCreateDirectoryEx)
 
 /****************************************************************************
 * SHGetSpecialFolderLocation API