Tighten config.hpp and Jamfile logic before attaching static build problems.

svn path=/trunk/boost/system/; revision=77997
Make BOOST_x_DYN_LINK tbe default

svn path=/trunk/boost/system/; revision=77999
Revert to BOOST_SYSTEM_STATIC_LINK as the default if no linkage macros supplied. See http://www.boost.org/doc/libs/1_49_0/libs/config/doc/html/boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_for_libraries_with_separate_source_code

svn path=/trunk/boost/system/; revision=78267
Revert portion of 68183. This changeset was aimed at other libraries, but inadvertently modified three boost/system headers.

svn path=/trunk/boost/system/; revision=78325
Add some infrastructure

svn path=/trunk/libs/system/; revision=80280
Add some infrastructure

svn path=/trunk/libs/system/; revision=80281
System/FileSystem/Asio/Thread: ref #7278 Added noexcept to Boost.System to conform with C++11

svn path=/trunk/boost/system/; revision=81808
Add BOOST_SYSTEM_NOEXCEPT to several functions previously missed. Update documentation to reflect use of noexcept with fallback to C++03 when C++11 feature not present.

svn path=/trunk/boost/system/; revision=83197
Use C++11 explicit conversion operator if available

svn path=/trunk/boost/system/; revision=83210