created branch to work on adding helper support to Boost.Serialization

[SVN r48742]
created branch to work on adding helper support to Boost.Serialization

[SVN r48743]
created branch to work on adding helper support to Boost.Serialization

[SVN r48745]
helper support first draft

[SVN r49603]
Boost.Log merged to trunk.

[SVN r83860]