ProjectExplorer: De-virtualize some more virtual methods

Use setters/getters for the bool flags in
Project::needsBuildConfigurations() and
Project::hasMakeInstallEquivalent.

Change-Id: I5ce937c3a5e8e0db627cda02a9007f8c28ccda0c
Reviewed-by: hjk <hjk@qt.io>

src/plugins/qmlprojectmanager/qmlproject.cpp

@@ -67,6 +67,8 @@ QmlProject::QmlProject(const Utils::FilePath &fileName) :
     setId(QmlProjectManager::Constants::QML_PROJECT_ID);
     setProjectLanguages(Context(ProjectExplorer::Constants::QMLJS_LANGUAGE_ID));
     setDisplayName(fileName.toFileInfo().completeBaseName());
+
+    setNeedsBuildConfigurations(false);
 }
 
 QmlProject::~QmlProject()
@@ -242,11 +244,6 @@ void QmlProject::refreshProjectFile()
     refresh(QmlProject::ProjectFile | Files);
 }
 
-bool QmlProject::needsBuildConfigurations() const
-{
-    return false;
-}
-
 QStringList QmlProject::makeAbsolute(const Utils::FilePath &path, const QStringList &relativePaths)
 {
     if (path.isEmpty())