Merged more changes from Parallel BGL
Removed blank line at end to match PBGL
Merged headers and source files (but not examples, tests, or docs) from Parallel BGL
Merged in changes from Nick to distributed betweenness centrality
Merged in code and docs from Parallel BGL; CMake-based build system for tests and examples and docs is not working; src and doc can be built with bjam
Fix build of graph_parallel when MPI is not configured.
Fixed inspection problems
Removed tabs
Fixed path to rst.css
Fixed (some) link problems found by inspect tool
Added MPI BSP process group docs
Removed tabs
Removed tabs
Stamped copyright notices into CMake build files
Boost.Test depends on the Numeric library, and graph_parallel has no headers of its own (at the moment)
Fixed uninitialized variable warning
Moved PBGL logo into Boost SVN to fix inspection issues
Changed to standard Boost reference_wrapper rather than wrap_ref
Changed default (empty) queue type from queue<int> to queue<vertex_descriptor> where vertex_descriptor is the graph's vertex descriptor type.
Added "edges_are_sorted" to CSR test case