let "build file" only run one build step

For example, C++ source files will be compiled but the build
stops before linking.

Task-number: QBS-283

Change-Id: If0573ea58b9a047980aab0fd8e4828f3d0c315b8
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/qbsprojectmanager/qbsbuildconfiguration.cpp

@@ -193,6 +193,16 @@ QStringList QbsBuildConfiguration::changedFiles() const
     return m_changedFiles;
 }
 
+void QbsBuildConfiguration::setActiveFileTags(const QStringList &fileTags)
+{
+    m_activeFileTags = fileTags;
+}
+
+QStringList QbsBuildConfiguration::activeFileTags() const
+{
+    return m_activeFileTags;
+}
+
 void QbsBuildConfiguration::setProducts(const QStringList &products)
 {
     m_products = products;