- Removed all permanent warning suppressions from library headers and avoided the resulting warnings with other means

- Updated acknowledgments

[SVN r42414]

libs/statechart

@@ -1 +1 @@
-Subproject commit 2cb2562dc2fac7d625a74439361a396ba5d1e370
+Subproject commit 970f7970a170f34a993e68f6599d3a8d55a9ebbe