Move most of the BuildConfiguration specific functions

Note: I didn't fix all the connects and there are a few missing things.
This compiles, more work is coming.

src/plugins/qmlprojectmanager/qmlproject.cpp

@@ -162,12 +162,6 @@ QStringList QmlProject::convertToAbsoluteFiles(const QStringList &paths) const
 QStringList QmlProject::files() const
 { return m_files; }
 
-QString QmlProject::buildParser(BuildConfiguration *configuration) const
-{
-    Q_UNUSED(configuration)
-    return QString();
-}
-
 QString QmlProject::name() const
 {
     return m_projectName;
@@ -198,18 +192,6 @@ bool QmlProject::hasBuildSettings() const
     return false;
 }
 
-ProjectExplorer::Environment QmlProject::environment(BuildConfiguration *configuration) const
-{
-    Q_UNUSED(configuration)
-    return ProjectExplorer::Environment::systemEnvironment();
-}
-
-QString QmlProject::buildDirectory(BuildConfiguration *configuration) const
-{
-    Q_UNUSED(configuration)
-    return QString();
-}
-
 ProjectExplorer::BuildConfigWidget *QmlProject::createConfigWidget()
 {
     return 0;