Add diagnostic message for the target copy operation of the cached build generator.

When doing separate compile/link building, pass (.o/.a/.ao/.dylib/.obj) files to the linker command line. ...

This was already done for .lib files.

Perform target setup when performing a cached build. Fixes #159.

Integrate the rdmd generator into the build generator and start to implement build caching. ...

The basic directory structure, as outlined in https://github.com/rejectedsoftware/dub/wiki/Separate-compilation-and-caching-of-dependencies has been implemented.

Still missing:

 - Dependencies are not built separately
 - The hash part of the build directory is not taking into account any build properties right now

Fix running executables that are not built in the CWD and create the target path if necessary.

Build to a temporary folder only if necessary. Fixes #82.

Fix "dub --build=ddox" and let it open the docs in the system browser automatically.

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.

Make "dub build --build=ddox" work for any target type and avoid including dependencies in the documentation. Fixes #142.

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

Make all paths issued by the build generator relative to work around issue #130.

Remove the now redundant GeneratorSettings.compilerBinary field.

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

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

Name response file dub-build.rsp instead of .dmd-response-file.txt and only quote arguments if needed. ...

LDC seems to dislike quotes in response files (errors out with: Error: unrecognized file extension d"). Now at least builds with no spaces should work fine. See also #86.

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

Add support for customized build types ("buildTypes"). Fixes #78. ...

Also changes the way the $DFLAGS environment variable works: passing --build=xyz will now cause DFLAGS to be ignored.

Add "workingDirectory" build setting to change the working directory from which the final executable will be run. Fixes #84.

Fix building with path arguments containing spaces.

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

Deprecate "relaxProperties", remove the default -property switch and warn about using them. Fixes #73.

Implement the "noDefaultFlags" build requirement. Fixes #68.

Use separate compile/link only for dmd (and not for ldmd and gdmd).

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

Add a notice that the target was not executed for "dub run" and library builds. ...

This was also added for the "rdmd" builder, even if that doesn't properly support library builds, yet.

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".

The "build" generator now removes the complete temporary directory, if any. Fixes #41. ...

Any files created by the process during run time will be deleted this way.