Merge remote-tracking branch 'origin/pr/640'

* origin/pr/640:
  Enhance grammar in `qmemman`

Pull request description:

I know typo/grammar-fixing PRs are usually frowned upon as "trying to get clout for contributing to X" but I've recently been spending some time in the dom0 journal and some of those strings have been irking me a bit, I don't think I'll be the only one to say that they could sound better and more professional.

qubes/qmemman/systemstate.py

@@ -101,7 +101,7 @@ def get_free_xen_memory(self):
             )
         elif xen_free < assigned_but_unused + self.XEN_FREE_MEM_MIN:
             self.log.error(
-                "Xen free = {!r} too small for satisfy assignments! "
+                "Xen free = {!r} too small to satisfy assignments! "
                 "assigned_but_unused={!r}, domdict={!r}".format(
                     xen_free, assigned_but_unused, self.domdict
                 )
@@ -350,7 +350,7 @@ def print_stats(self, xenfree, memset_reqs):
     def do_balance(self):
         self.log.debug("do_balance()")
         if os.path.isfile("/var/run/qubes/do-not-membalance"):
-            self.log.debug("do-not-membalance file preset, returning")
+            self.log.debug("do-not-membalance file present, returning")
             return
 
         self.refresh_memactual()
@@ -406,7 +406,7 @@ def do_balance(self):
                                 == self.domdict[dom2].memory_actual
                             ):
                                 self.log.warning(
-                                    "dom {!r} didnt react to memory request"
+                                    "dom {!r} did not react to memory request"
                                     " (holds {}, requested balloon down to {})".format(
                                         dom2,
                                         self.domdict[dom2].memory_actual,
@@ -416,8 +416,8 @@ def do_balance(self):
                                 self.domdict[dom2].no_progress = True
                             else:
                                 self.log.warning(
-                                    "dom {!r} still hold more"
-                                    " memory than have assigned ({} > {})".format(
+                                    "dom {!r} still holds more"
+                                    " memory than assigned ({} > {})".format(
                                         dom2,
                                         self.domdict[dom2].memory_actual,
                                         mem2,