cmdserver: invalidate the dirstate when running commands (issue3271)

The dirstate is invalidated separately outside of invalidate() which is
already being called (other callers of invalidate() seems to suggest the
separation is there for a reason).

mercurial/commandserver.py

@@ -186,6 +186,7 b' class server(object):'
         self.repo.baseui = copiedui
         self.repo.ui = self.repo.dirstate._ui = self.repoui.copy()
         self.repo.invalidate()
+        self.repo.invalidatedirstate()
 
         req = dispatch.request(args[:], copiedui, self.repo, self.cin,
                                self.cout, self.cerr)

tests/test-commandserver.py

@@ -163,8 +163,10 b' def outsidechanges(server):'
     f = open('a', 'ab')
     f.write('a\n')
     f.close()
+    runcommand(server, ['status'])
     os.system('hg ci -Am2')
     runcommand(server, ['tip'])
+    runcommand(server, ['status'])
 
 def bookmarks(server):
     readchannel(server)

tests/test-commandserver.py.out

@@ -93,6 +93,8 b' eff892de26ec tip'
 
 testing outsidechanges:
 
+ runcommand status
+M a
  runcommand tip
 changeset:   1:d3a0a68be6de
 tag:         tip
@@ -100,6 +102,7 b' user: test'
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     2
 
+ runcommand status
 
 testing bookmarks: