The may_alias workaround is also disabled for GCC prior to 3.2. Also added description for this workaround.

[SVN r67112]

libs/optional

@@ -1 +1 @@
-Subproject commit d39627c5b610628d19cccb5b72466a9b19be35e6
+Subproject commit 64d8062621d07f390482968927d2e0a415280b2c