inc: winapi: Add strsafe.bi and windowsx.bi (needed by dshow.bi)

(cherry picked from commit e0e4484)

Author: dkl

changelog.txt

@@ -4,6 +4,7 @@ Version 1.02.1
 
 [added]
 - Package name + version to all the new/updated bindings
+- Windows API binding: strsafe.bi and windowsx.bi
 
 [fixed]
 - 1.02.0 regression: win/winuser.bi: Renamed INPUT typedef to INPUT_ to avoid conflicts with the quirk keyword (due to bug #730)