Add documentation note specifying that pending handlers are still executed

after a strand is destroyed.


[SVN r37632]

libs/asio

@@ -1 +1 @@
-Subproject commit 05518d58e6f41df4530822cc65c0e3220fb76ba6
+Subproject commit cbe0de5634a947b7f9942bbad21117e6af1a23f9