fw: NccStrategy remembers only best face

refs #1961

Strategy::beforeSatisfyPendingInterest is renamed to
Strategy::beforeSatisfyInterest, so as to match the semantics of this trigger.
This is a backwards-incompatible change that requires function renaming in
all subclasses of Strategy class.

LimitedIo::afterOp gets a bugfix that allows it to be invoked out of
LimitedIo::run without leaving io_service unusable.

Change-Id: Ia4c632beb62c554724b83846a3d6358ae08779ad
diff --git a/daemon/fw/ncc-strategy.hpp b/daemon/fw/ncc-strategy.hpp
index 6c284a9..0f5ddac 100644
--- a/daemon/fw/ncc-strategy.hpp
+++ b/daemon/fw/ncc-strategy.hpp
@@ -1,11 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014  Regents of the University of California,
- *                     Arizona Board of Regents,
- *                     Colorado State University,
- *                     University Pierre & Marie Curie, Sorbonne University,
- *                     Washington University in St. Louis,
- *                     Beijing Institute of Technology
+ * Copyright (c) 2014,  Regents of the University of California,
+ *                      Arizona Board of Regents,
+ *                      Colorado State University,
+ *                      University Pierre & Marie Curie, Sorbonne University,
+ *                      Washington University in St. Louis,
+ *                      Beijing Institute of Technology,
+ *                      The University of Memphis
  *
  * This file is part of NFD (Named Data Networking Forwarding Daemon).
  * See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #ifndef NFD_DAEMON_FW_NCC_STRATEGY_HPP
 #define NFD_DAEMON_FW_NCC_STRATEGY_HPP
@@ -47,8 +48,8 @@
                        shared_ptr<pit::Entry> pitEntry);
 
   virtual void
-  beforeSatisfyPendingInterest(shared_ptr<pit::Entry> pitEntry,
-                               const Face& inFace, const Data& data);
+  beforeSatisfyInterest(shared_ptr<pit::Entry> pitEntry,
+                        const Face& inFace, const Data& data);
 
 protected:
   /// StrategyInfo on measurements::Entry