mq: fix qnew and qimport to deal with series file comments

qnew and qimport did not take comments into account when deciding where
to place new patches in the series file.

hgext/mq.py

@@ -418,7 +418,7 b' class queue:'
                 commitfiles = c + a + r
         self.check_toppatch(repo)
         wlock = repo.wlock()
-        insert = self.series_end()
+        insert = self.full_series_end()
         if msg:
             n = repo.commit(commitfiles, "[mq]: %s" % msg, force=True,
                             wlock=wlock)
@@ -1045,6 +1045,15 b' class queue:'
         self.applied.append(revlog.hex(n) + ":" + '.hg.patches.save.line')
         self.applied_dirty = 1
 
+    def full_series_end(self):
+        if len(self.applied) > 0:
+            (top, p) = self.applied[-1].split(':')
+            end = self.find_series(p)
+            if end == None:
+                return len(self.full_series)
+            return end + 1
+        return 0
+
     def series_end(self):
         end = 0
         if len(self.applied) > 0:
@@ -1132,7 +1141,7 b' class queue:'
             if patch in self.series:
                 self.ui.warn("patch %s is already in the series file\n" % patch)
                 sys.exit(1)
-            index = self.series_end() + i
+            index = self.full_series_end() + i
             self.full_series[index:index] = [patch]
             self.read_series(self.full_series)
             self.ui.warn("adding %s to series file\n" % patch)