ftrace: rename Run to FTrace

Run is a very generic and inappropriate name for an object that parses
the result of ftrace into a form consumable by python.  Rename it to
FTrace in preparation for its generalization.
diff --git a/tests/test_cpu_power.py b/tests/test_cpu_power.py
index af60939..f3bb8dc 100644
--- a/tests/test_cpu_power.py
+++ b/tests/test_cpu_power.py
@@ -52,21 +52,21 @@
 
     def test_cpuoutpower_dataframe(self):
         """Test that CpuOutPower() creates a proper data_frame"""
-        outp = trappy.Run().cpu_out_power
+        outp = trappy.FTrace().cpu_out_power
 
         self.assertEquals(outp.data_frame["power"].iloc[0], 1344)
         self.assertTrue("cdev_state" in outp.data_frame.columns)
 
     def test_cpuoutpower_get_all_freqs(self):
         """Test CpuOutPower.get_all_freqs()"""
-        dfr = trappy.Run().cpu_out_power.get_all_freqs(self.map_label)
+        dfr = trappy.FTrace().cpu_out_power.get_all_freqs(self.map_label)
 
         self.assertEquals(dfr["A57"].iloc[0], 1100)
         self.assertEquals(dfr["A53"].iloc[1], 850)
 
     def test_cpuinpower_get_dataframe(self):
         """Test that CpuInPower() creates a proper data_frame()"""
-        inp = trappy.Run().cpu_in_power
+        inp = trappy.FTrace().cpu_in_power
 
         self.assertTrue("load0" in inp.data_frame.columns)
         self.assertEquals(inp.data_frame["load0"].iloc[0], 24)
@@ -80,7 +80,7 @@
         with open("trace.txt", "w") as fout:
             fout.write(in_data)
 
-        inp = trappy.Run(normalize_time=False).cpu_in_power
+        inp = trappy.FTrace(normalize_time=False).cpu_in_power
         self.assertEquals(round(inp.data_frame.index[0], 6), 676.256284)
         self.assertEquals(inp.data_frame["cpus"].iloc[1], "00000000,00000030")
 
@@ -97,7 +97,7 @@
         with open("trace.txt", "w") as fout:
             fout.write(in_data)
 
-        inp = trappy.Run(normalize_time=False).cpu_in_power
+        inp = trappy.FTrace(normalize_time=False).cpu_in_power
 
         self.assertEquals(inp.data_frame["load0"].iloc[0], 74)
         self.assertEquals(inp.data_frame["load1"].iloc[0], 49)
@@ -110,7 +110,7 @@
 
     def test_cpuinpower_get_all_freqs(self):
         """Test CpuInPower.get_all_freqs()"""
-        dfr = trappy.Run().cpu_in_power.get_all_freqs(self.map_label)
+        dfr = trappy.FTrace().cpu_in_power.get_all_freqs(self.map_label)
 
         self.assertEquals(dfr["A57"].iloc[0], 1100)
         self.assertEquals(dfr["A53"].iloc[1], 850)
@@ -118,22 +118,22 @@
 
     def test_cpuinpower_get_load_data(self):
         """Test CpuInPower.get_load_data()"""
-        run = trappy.Run()
-        first_load = run.cpu_in_power.data_frame["load0"].iloc[0]
-        load_data = run.cpu_in_power.get_load_data(self.map_label)
+        trace = trappy.FTrace()
+        first_load = trace.cpu_in_power.data_frame["load0"].iloc[0]
+        load_data = trace.cpu_in_power.get_load_data(self.map_label)
 
         self.assertEquals(load_data["A57"].iloc[0], 24 + 19)
         self.assertEquals(load_data["A53"].iloc[3], 32 + 28 + 46 + 44)
         self.assertEquals(load_data["A57"].iloc[0], load_data["A57"].iloc[1])
 
-        self.assertEquals(run.cpu_in_power.data_frame["load0"].iloc[0],
+        self.assertEquals(trace.cpu_in_power.data_frame["load0"].iloc[0],
                           first_load)
 
     def test_cpuinpower_get_normalized_load_data(self):
         """Test CpuInPower.get_normalized_load_data()"""
-        run = trappy.Run()
-        first_load = run.cpu_in_power.data_frame["load0"].iloc[0]
-        load_data = run.cpu_in_power.get_normalized_load_data(self.map_label)
+        trace = trappy.FTrace()
+        first_load = trace.cpu_in_power.data_frame["load0"].iloc[0]
+        load_data = trace.cpu_in_power.get_normalized_load_data(self.map_label)
 
         # Ideally the trace should have an event in which the cpus are
         # not running at maximum frequency
@@ -141,5 +141,5 @@
                           (24. + 19) * 1100000 / (1100000 * 2))
         self.assertEquals(load_data["A53"].iloc[1],
                           (36. + 49 + 48 + 7) * 850000 / (850000 * 4))
-        self.assertEquals(run.cpu_in_power.data_frame["load0"].iloc[0],
+        self.assertEquals(trace.cpu_in_power.data_frame["load0"].iloc[0],
                           first_load)