Fix out-of-date maximum version check to only check binaries, not sources.

britney.py

@@ -1515,7 +1515,13 @@ class Britney(object):
                     maybe_nbs = ""
                     if not source_t or same_source(source_t[VERSION], v):
                         for pkg in oodbins[v]:
-                            if self.__maxver(pkg, suite) == v:
+                            maxver = None
+                            for other_arch in self.options.architectures:
+                                if pkg not in self.binaries[suite][other_arch][0]: continue
+                                pkgv = self.binaries[suite][other_arch][0][pkg][VERSION]
+                                if maxver is None or apt_pkg.version_compare(pkgv, maxver) > 0:
+                                    maxver = pkgv
+                            if maxver == v:
                                 maybe_nbs = "; NBS?"
                                 break
                     oodtxt = oodtxt + "%s (from <a href=\"https://launchpad.net/ubuntu/+source/" \