Added compile tests for headers. The test verifies that Boost.Log headers are self-contained and there are no missing headers. As a result of the test addition, fixed a few bugs in header includes.
Fixed headers self-sufficiency test on Windows. Fixed MSVC warning directive in spirit_classic.hpp.
Added a workaround for Boost.Phoenix bug #9363.
Refs #9123. Implemented support for incomplete and empty markers for the named scope formatter.
Removed commented code.
Added a changelog entry.
Attempt to workaround gcc 4.2 problems with result_of.
Fixed compilation with MSVC for 32-bit x86. Removed use of Boost.Spirit and Boost.Phoenix in some cases to speed up compilation and reduce binary sizes.
Fixed compilation for x86-64.
Fixed compilation.
Fixed compilation for C++03 compilers.