Fix out-of-order initialization
Improve Json::Value special members (fixes RIPD-215):
* Add move special members
* Fix Json::Value::swap
Tidy up some source filenames:
* Add .unity suffix to mark unity sources
* Fix some relative include paths
[WIP] Beast SCons tools:
* Add VSProject SCons Builder
* Add Beast build utilities python module
[WIP] improved rippled SConstruct