Add tentative serialization support.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85212 b8fc166d-592f-0410-95f2-cb63ce0dd405
Add missing serialization file


git-svn-id: http://svn.boost.org/svn/boost/trunk@85213 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fix gcc serialization code, and improve binary serialization.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85214 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fix skipping template body containing an escaped template call.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85216 b8fc166d-592f-0410-95f2-cb63ce0dd405