Renamed all the "vibe" package to "vibecompat" to avoid conflicts.

Added rudimentary support for the --arch= option and moved build type flag generation to a common place.

Fixed up the VisualD and Mono-D generators and changed their names on the command line to lower-case.

Added a new "build" generator that directly invokes the compiler. ...

This generator supports all compilers in contrast to the rdmd based one and will later be the default.

"dub build" and "dub run" are now also executed using the generator system (RdmdGenerator).

Implemented basic multi-compiler support (with only a dmd implementation right now).

Dub builds with VisualD with latest vibe. BuildPlatform is passed from app.d to the generators. System libraries are suffixed with '.lib' for VisualD.

Renamed Application to Project and put it into its own module + added a stub MonoD generator.

Fixed startup.

More resolved conflicts, replaced usage of PackageStore with PackageManager.

Incomplete generation of VisualD project files. Missing: project dependencies being compilable libraries and precompiled libraries as well as system installed precompiled libraries.