rename PowerTap.(h|cpp) to PowerTapUtil.(h|cpp)

...in preparation for separating out a PowerTapDevice class.

src/DownloadRideDialog.h

@@ -20,7 +20,7 @@
 #define _GC_DownloadRideDialog_h 1
 
 #include <QtGui>
-#include "PowerTap.h"
+#include "PowerTapUtil.h"
 
 class MainWindow;
 class DownloadThread;

src/PowerTapUtil.cpp

@@ -16,7 +16,7 @@
  * Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include "PowerTap.h"
+#include "PowerTapUtil.h"
 #include <math.h>
 
 #define PT_DEBUG false

src/RawRideFile.cpp

@@ -17,7 +17,7 @@
  */
 
 #include "RawRideFile.h"
-#include "PowerTap.h"
+#include "PowerTapUtil.h"
 #include <assert.h>
 #include <math.h>
 

src/src.pro

@@ -50,7 +50,7 @@ HEADERS += \
         LogTimeScaleDraw.h \
         LogTimeScaleEngine.h \
         Pages.h \
-        PowerTap.h \
+        PowerTapUtil.h \
         Serial.h \
         ToolsDialog.h \
         Zones.h \
@@ -94,7 +94,7 @@ SOURCES += \
         LogTimeScaleDraw.cpp \
         LogTimeScaleEngine.cpp \
         Pages.cpp \
-        PowerTap.cpp \
+        PowerTapUtil.cpp \
         Serial.cpp \
         ToolsDialog.cpp \
         Zones.cpp \