BlackBerry: Make current project behave like it used to

ProjectTree::currentProject was changed, update the code to
get the old behavior.

That behavior is most likely not the best to have, but that
is for another patch:-)

Change-Id: I8c84825443b8383f738c237ec67332e62199fe5e
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/qnx/bardescriptorfilenodemanager.cpp

@@ -47,6 +47,7 @@
 #include <projectexplorer/buildsteplist.h>
 #include <projectexplorer/project.h>
 #include <projectexplorer/projecttree.h>
+#include <projectexplorer/session.h>
 #include <projectexplorer/target.h>
 #include <projectexplorer/buildconfiguration.h>
 #include <qmakeprojectmanager/qmakenodes.h>
@@ -67,6 +68,8 @@ BarDescriptorFileNodeManager::BarDescriptorFileNodeManager(QObject *parent)
 {
     connect(ProjectExplorer::ProjectTree::instance(), &ProjectExplorer::ProjectTree::currentProjectChanged,
             this, &BarDescriptorFileNodeManager::setCurrentProject);
+    connect(ProjectExplorer::SessionManager::instance(), &ProjectExplorer::SessionManager::startupProjectChanged,
+            this, &BarDescriptorFileNodeManager::setCurrentProject);
 }
 
 void BarDescriptorFileNodeManager::setCurrentProject(ProjectExplorer::Project *project)