ProjectConfiguration: Add project() member

Change-Id: I0a7170c1721a9e5bcf18af1bab8158af71c64454
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/buildconfiguration.cpp

@@ -226,6 +226,11 @@ Target *BuildConfiguration::target() const
     return static_cast<Target *>(parent());
 }
 
+Project *BuildConfiguration::project() const
+{
+    return target()->project();
+}
+
 Utils::Environment BuildConfiguration::baseEnvironment() const
 {
     Utils::Environment result;