headers: Import ivectorchangedeventargs.idl from Wine

This is now required by windows.foundation.idl and
windows.foundation.collections.idl.

Signed-off-by: LIU Hao <lh_mouse@126.com>
diff --git a/mingw-w64-headers/wine-import.sh b/mingw-w64-headers/wine-import.sh
index 5b21822..5fca1ef 100755
--- a/mingw-w64-headers/wine-import.sh
+++ b/mingw-w64-headers/wine-import.sh
@@ -186,6 +186,7 @@
 	exdisp \
 	fusion \
 	icftypes \
+	ivectorchangedeventargs \
 	mediaobj \
 	mfreadwrite \
 	mmdeviceapi \