Move buildbot support to sandbox until we decide what to do with it.
removing spirit stuff
Fix missing ref error to non-local conditional rule.
Add ext build for Luabind (trunk version only).
Add building of Irrlicht 3D engine.
Minor fixes to irrlicht build.
Add 'default' to version features. To allow version-less declares to work.
Undo default value. It was added later on anyway.
Fix disappearing requirements from building boost sublibs.
Fix disappearing requirements from building boost sublibs.
Building of FreeType 2.
Add program_options building to build extensions.
Add missing usage requirement to make the static irrlicht build usable.
Add tests... starting with a test for using an extension within another extension.
Test extension using from outside init rule.
Add compiling of lib3ds library.
Disable non-shared linkage warning when compiling Luabind as a shared lib with msvc.
It can be that an extension is initialized outside of a project, for example in a user-config.jam. In that case we need to create a standalone project.
Cleanup outdated win-sdk support extension.
Include src dir for when one needs to compile internal irrlicht extensions.