Add ADN_DEL_UNC_PATHS define to advpub.h.

include/advpub.h

@@ -59,6 +59,7 @@ typedef CSTRTABLE *LPCSTRTABLE;
 #define ADN_DEL_IF_EMPTY            0x00000001
 #define ADN_DONT_DEL_SUBDIRS        0x00000002
 #define ADN_DONT_DEL_DIR            0x00000004
+#define ADN_DEL_UNC_PATHS           0x00000008
 
 HRESULT WINAPI DelNode(LPCSTR pszFileOrDirName, DWORD dwFlags);
 HRESULT WINAPI DelNodeRunDLL32(HWND,HINSTANCE,LPSTR,INT);