Merged first batch of 1.51 changes for Boost.Graph and Boost.PropertyMap

svn path=/branches/release/boost/graph/; revision=79189
Second batch of Boost.Graph and Boost.PropertyMap changes for 1.51

svn path=/branches/release/boost/graph/; revision=79191
Merged more changes (bug fixes, especially hopefully fixing the VC++ test failure) from trunk

svn path=/branches/release/boost/graph/; revision=79390
Merged bug fix from trunk

svn path=/branches/release/libs/graph/; revision=79393
Merged r79227 from trunk, hopefully fixing all VC++ Boost.Graph Graphviz test issues

svn path=/branches/release/boost/pending/property.hpp; revision=79771
Fixed order of arguments to get_param_type

svn path=/branches/release/boost/graph/; revision=79772
Merged Boost.Graph changes from trunk

svn path=/branches/release/boost/graph/; revision=80740
Merge comment typo to release; Fixes #7511

svn path=/branches/release/boost/graph/; revision=80998
Merge 80908,80939,80957 from ^/trunk

  ------------------------------------------------------------------------
  r80908 | jewillco | 2012-10-08 22:04:48 +0200 (Mo, 08 Okt 2012) | 1 line
  
  Added attempt at workaround for VC++ const graph type bug
  ------------------------------------------------------------------------
  r80939 | jewillco | 2012-10-10 19:27:44 +0200 (Mi, 10 Okt 2012) | 1 line
  
  Added another remove_const to work around VC++ 9 issues
  ------------------------------------------------------------------------
  r80957 | jewillco | 2012-10-11 18:45:33 +0200 (Do, 11 Okt 2012) | 1 line
  
  Added test from Juergen Hunold
  ------------------------------------------------------------------------

svn path=/branches/release/boost/graph/; revision=81042
Merged Boost.Graph changes from trunk for 1.53

svn path=/branches/release/boost/graph/; revision=82061
Merged boost::algorithm::gather and updated tests for Utility, Algorithm and Utility libraries

svn path=/branches/release/boost/graph/; revision=83154
merge [82960] to release, fixes #7663

svn path=/branches/release/boost/graph/; revision=83381