s/target/buildtarget/ in projectnodes

This is in preparation of the addition of "targets" in the sense
of "platforms to develop for" into the codebase.

Reviewed-by: dt

src/plugins/cmakeprojectmanager/cmakeprojectnodes.cpp

@@ -37,7 +37,7 @@ CMakeProjectNode::CMakeProjectNode(const QString &fileName)
 {
 }
 
-bool CMakeProjectNode::hasTargets() const
+bool CMakeProjectNode::hasBuildTargets() const
 {
     // TODO
     return true;