Put BuildSettings into its own module and invoke DMD to determine the actual build platform. ...

Currently only for DMD, the build platform is now determined by actually invoking the compiler with the proper -mX switches instead of guessing from the compiler run that was used to build DUB.

Output -l flags on the compiler command line after all source files. Fixes #281.

Merge branch 'dustmite'

Add -defaultlib=x to the flags that need to be passed to the separate linking stage for DMD.

Add support for execution result callbacks in the build generator.

Fix version(Linux) -> version(linux) - gotta love inconsistent naming...

Use --no-as-needed only in Linux (OSX's LLVM based tool chain doesn't support it).

Add --no-as-needed to avoid linker errors with new GCC versions used as the linker front end. See #199.

Put linker flags (including "libs") after linker "sourceFiles". See #199. ...

Supposedly fixes an issue where a dependency that was build as a static library cannot access symbols of an external library that it needs, because the external library is passed to the linker before the dependency itself.

Rename BuildOptions.noBoundsChecks to noBoundsCheck to be consistent with BuildRequirements.requireBoundsCheck.

Rename some BuildOptions to avoid D keywords.

Don't emit -fPIC for DMD on Windows. Fixes #166.

Remove dub.internal.std.process compatibility code as it doesn't support browse() and the compile status on older DMD versions isn't tracked anyway.

Issue -shared and -fPIC when building shared libraries with DMD. Fixes #138.

Fix handling of lib flags on Windows for GDC/LDC.

Move dub.utils to dub.internal.utils and update copyright dates.

Let the individual compiler classes handle passing arguments to the compiler. Fixes #86.

Add -shared flag for DMD when building dynamic libraries.

Generalize common compiler switches in the form of a BuildOptions enum. ...

Related changes:
 - translation of DMD compiler switches to other compilers is generalized
 - application of build requirements is generalized
 - added support for debug versions
 - supporting almost all compiler settings for generated VisualD projects now

Improve adherence to code conventions.

Introduce TargetType.none, fix handling of non-target project's dependencies and avoid continuous reinstalls of referenced sub-packages.

Rename log levels to be in line with the latest vibe.d versions.

Fix explicit 32-bit/64-bit compilation for DMD with separate compile/link passes.

Add some basic example projects.

Attempt to fix handling of "-Wl" flags returned by "pkg-config".

Fix inclusion of debug information for the separate compile/link mode.

Fix static library builds for all compilers. Partial fix for #53. ...

See also #66.

DMD static library build fix, attempt 2

Use "dmd" to link in the build generator also on Windows. Fixes #57. ...

DMD uses an absolute path to invoke link.exe (as configured in sc.ini) and picks up the right one, while dub just expected OPTLINK to be in PATH.

Move all source files outside of "dub" to "dub/internal".