Update to Boost 1.55.

git-svn-id: http://maxmods.googlecode.com/svn/trunk@1589 b77917fb-863c-0410-9a43-030a88dac9d3
Remove deleted files.

git-svn-id: http://maxmods.googlecode.com/svn/trunk@1590 b77917fb-863c-0410-9a43-030a88dac9d3