Add new build-time configuration feature.
Add support for VC++ 14

All the config tests pass, with the exception of the user-defined literal test, which passes only if "static constexpr" is substituted with "static BOOST_CONSTEXPR_OR_CONST" and "constexpr" is substituted with "BOOST_CONSTEXPR".

See
http://blogs.msdn.com/b/vcblog/archive/2014/06/03/visual-studio-14-ctp.aspx
and
http://blogs.msdn.com/b/somasegar/archive/2014/05/28/first-preview-of-visual-studio-quot-14-quot-available-now.aspx
Add BOOST_MSVC_ENABLE_2014_JUN_CTP marco

Disables new features supplied by VC++ 14 CTP1 by default
Merge pull request #21 from MarcelRaad/patch-1

Add support for VC++ 14
Run config_test and config_info with no RTTI and no exceptions.
Add a few more g++ and Intel predefined macros to config_info.
Merge pull request #22 from boostorg/pull-request/test-no-rtti

Run config_test and config_info with no RTTI and no exceptions.
Merge pull request #23 from boostorg/pull-request/config-info-rtti-macros

Add a few more g++ and Intel predefined macros to config_info.
Various g++/clang config_test fixes.
Add additional linkflags for no-rtti, no-except runs of config_test.
Suppress more GCC warnings.
Fix GCC compile failure in lambda test case.
Merge branch 'develop' of https://github.com/boostorg/config into develop
Add RTTI detection to intel.hpp.
merge
Merge branch 'pull-request/config-test-gcc-fixes' into develop
Improve lambda test case some more.
Merge pull request #25 from boostorg/pull-request/config-test-pthread-rt-flags

Add additional linkflags for no-rtti, no-except runs of config_test.
Merge pull request #26 from boostorg/pull-request/intel-rtti-detection

Add RTTI detection to intel.hpp
Revert "Add new build-time configuration feature."

This reverts commit dad7bc5b30a6b313208e2b2eefe47aa1f25a8934.

Conflicts:
	checks/config.jam
Revert "Revert "Add new build-time configuration feature.""

This reverts commit 4cf1376ec27dcb8fbc9a64a03a841523c40e104c.

Update tests to not use the run rule, but run the programs by other means instead.