At this point, compiling projects and debugger helpers works.
The speciality with this is that Qt does not provide distinct
mkspecs, because MSVC draws the line between 32 and 64 bit
solely by the environment.

The common code for all makesteps i mainly tracking in which directories
we are currently building. And guessing the filename from that
information. And creating a buildparser from a name.

Hopefully i didn't miss a plugin.

Hopefully it was the same bug.

Fixes issues with handling additional dots in the filename in many
places.

Task: 246390

Now it will only update the list of files when you edit [project].files,
and only reparse all files when you edit [project].config or
[project].includes. When updating the file list it will only parse the
added files.

The name is used as the base for files like [project].creator,
[project].files, etc. and is displayed in the Projects mode and the
Projects tree.

It was missing for CustomExecutableRunConfiguration and
Qt4RunConfiguration.

Reviewed-by: dt

For the generic project manager.

For now only for GenericProject, since the CMakeProject doesn't have the
right tool chain set on Windows yet.

Reviewed-by: dt

Was a bit confusing that a MakeStep was constructed by a
MakeBuildStepFactory and configured by a MakeBuildStepConfigWidget.

The MakeStep of the generic project manager was renamed to
GenericMakeStep.

Reviewed-by: Roberto Raggi

This stuff was all over the place, a relic from before the editor
settings were unified. Now the initialization is only done in
TextEditorSettings.

Fixes the .pro file editor and the generic project files editor, which
before only used the font settings.