Add test for the crash that can occur when destroying a handler object that

owns its own memory (as is the case when destroying handlers in an orphaned
strand). 


[SVN r46003]

libs/asio

@@ -1 +1 @@
-Subproject commit f3ee6627d852df4019327c026818803f3e429b69
+Subproject commit b466d4299657136a86dc48e5a21840b2cfd0fbe6