Merge branch 'pw/p4'

* pw/p4:
  git-p4: test clone @all
  git-p4: fix clone @all regression

contrib/fast-import/git-p4

@@ -1763,7 +1763,7 @@ class P4Sync(Command):
 
                 changes.sort()
             else:
-                if not self.p4BranchesInGit:
+                if not isinstance(self, P4Clone) and not self.p4BranchesInGit:
                     die("No remote p4 branches.  Perhaps you never did \"git p4 clone\" in here.");
                 if self.verbose:
                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),