We are currently not handling rrdtool like we do other embedded components. Instead of a proper vendor tree, we just have a tar ball checked in. This makes it difficult to work with then changes need to be made.
Doing this now, as it makes bug 8608 easier to implement.
Should be cleaned up now. * Vendor tree created * The rrdtool source tree is dropped directly in to a "rrdtool" submodule/subdirectory * A vendor drop script has been added * Build is controlled from the directory above the rrdtool submodule