Make BuildSteps one instance per BuildConfiguration

Enables users to change which buildsteps get run per buildconfiguration.
Some further tweaks are probably necessary. This is a rather big
change, though it should work. :)

src/plugins/qmlprojectmanager/qmlproject.cpp

@@ -29,7 +29,6 @@
 
 #include "qmlproject.h"
 #include "qmlprojectconstants.h"
-#include "qmlmakestep.h"
 
 #include <projectexplorer/toolchain.h>
 #include <projectexplorer/persistentsettings.h>
@@ -242,15 +241,6 @@ QStringList QmlProject::targets() const
     return targets;
 }
 
-QmlMakeStep *QmlProject::makeStep() const
-{
-    foreach (ProjectExplorer::BuildStep *bs, buildSteps()) {
-        if (QmlMakeStep *ms = qobject_cast<QmlMakeStep *>(bs))
-            return ms;
-    }
-    return 0;
-}
-
 bool QmlProject::restoreSettingsImpl(ProjectExplorer::PersistentSettingsReader &reader)
 {
     Project::restoreSettingsImpl(reader);
@@ -260,11 +250,6 @@ bool QmlProject::restoreSettingsImpl(ProjectExplorer::PersistentSettingsReader &
         addRunConfiguration(runConf);
     }
 
-    if (buildSteps().isEmpty()) {
-        QmlMakeStep *makeStep = new QmlMakeStep(this);
-        insertBuildStep(0, makeStep);
-    }
-
     refresh(Everything);
     return true;
 }