Updated Jamfile to avoid special characters in condition.

This silences a bjam warning.

Minor nonessential code cleanup.

Updated .gitignore to match the new directory structure.

Updated .gitignore to match the new directory structure.

Silenced MSVC warning about a narrowing conversion.

Silenced MSVC warning about a narrowing conversion.

Merge pull request boostorg#35 from danieljames/fix-images

Add dependency on copied images

Corrected error messages in exceptions on unsupported filter relation.

Added a check for natively supported 32-bit atomic ops. If not suppor…

…ted, exclude IPC facilities from build.

Replaced the local forward declaration with string_ref_fwd.hpp as the…

… latter has been reinstated in develop.