Graph: Remove obsolete MSVC version checks.

[SVN r85934]
Pending: Remove obsolete MSVC version checks.

[SVN r86028]
Graph: Remove obsolete GCC version check.

[SVN r86059]
Qualified calls to tie in documentation; fixes #9184

[SVN r86126]
Fixed documentation about hash_setS; fixes #6990

[SVN r86136]
Made boost::unordered inclusion unconditional; removed support for non-partial-specialization compilers; enabled C++11 unordered containers when they are present; refs #8962

[SVN r86137]
Applied patch from #9229 to allow common subgraphs of size 1; fixes #9229

[SVN r86236]
Remove BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

Process #ifdef...#endif blocks.

[SVN r86243]
Remove BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

Process #ifndef...#endif conditions.

[SVN r86244]
Remove BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION

Process #ifndef...#else...#endif blocks.

[SVN r86245]
Made some of changes from #9246: added new test case (modifying tests on callback usage to match current documentation); removed special-casing of empty graphs; added patch from #9246 for correct return values; did not make change to documentation suggested there since I chose to have the callback called even for empty graphs; fixes #9246

[SVN r86336]