Merge from trunk:

* Fix for GCC-4.8 warning (fixes #8547)
* Disable tests, invalid for C11 (clang specific)

[SVN r84183]

libs/conversion

@@ -1 +1 @@
-Subproject commit b97f2542ecc5e6cf98df7e9816b3b8de1f25f0a7
+Subproject commit 3af0af940567f99cddbd341e356813c80d479045