table: MeasurementsAccessor findLongestPrefixMatch & findExactMatch

This commit also improves unit testing of MeasurementsAccessor,
and changes signature of MeasurementsAccessor constructor.

refs #2314

Change-Id: Ie0494628c6d3faac0473bc4cfb21998f89270aaf
diff --git a/daemon/table/measurements.cpp b/daemon/table/measurements.cpp
index 03042ba..03c7927 100644
--- a/daemon/table/measurements.cpp
+++ b/daemon/table/measurements.cpp
@@ -3,7 +3,7 @@
  * Copyright (c) 2014-2015,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
- *                           University Pierre & Marie Curie, Sorbonne Universit
+ *                           University Pierre & Marie Curie, Sorbonne University,
  *                           Washington University in St. Louis,
  *                           Beijing Institute of Technology,
  *                           The University of Memphis.