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

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

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

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

svn path=/branches/release/boost/iterator/; revision=79393
Merge program_options revisions 79280 and 79283.

svn path=/branches/release/boost/iterator/; revision=79758
Merged r79227 from trunk, hopefully fixing all VC++ Boost.Graph Graphviz test issues

svn path=/branches/release/boost/iterator/; revision=79771
merged [80550], allowing users to force result_of to use decltype

svn path=/branches/release/boost/iterator/; revision=80551
Merging boost/iterator and libs/iterator trunk to release.

svn path=/branches/release/boost/iterator/; revision=80568
Merge bug fixes to release; Fixes #7399 Fixes #7400 Fixes #7401

svn path=/branches/release/boost/iterator/; revision=80670
Merge doc fixes to release; Fixes #7244

svn path=/branches/release/boost/iterator/; revision=80694
Merged Boost.Graph changes from trunk

svn path=/branches/release/boost/iterator/; revision=80740
Merging boost/iterator from trunk to release (usability improvement after latest fix to function_input_iterator).

svn path=/branches/release/boost/iterator/; revision=80813
Merging trunk to release; fixing typo in comments of iterator_facade.

svn path=/branches/release/boost/iterator/; revision=80818
Changed version to 1.53

svn path=/branches/release/boost/iterator/; revision=81305
Merge deprecated macro change for Boost.LocalFunction to release; no functionality change

svn path=/branches/release/boost/iterator/; revision=81851
Merged boost::algorithm::gather and updated tests for Utility, Algorithm and Utility libraries

svn path=/branches/release/boost/iterator/; revision=83154