[boost] [1.35.0] RC_1_34_0 patches and merging.

Hi, This is a heads up for developers. I did not merge patches that I applied myself from RC_1_34_0 to HEAD so I guess there are plenty of changes in RC_1_34_0 that are not in HEAD. Please review the changes to RC_1_34_0 and merge as needed. Thomas -- Thomas Witt witt@acm.org