cpp_headers: Renamed C++ headers from .h -> .hpp

To make room for UPM C and C++ sensor code to coexist, all UPM
C++ headers have been renamed from h -> hpp.  This commit contains
updates to documentation, includes, cmake collateral, examples, and
swig interface files.

    * Renamed all cxx/cpp header files which contain the string
    'copyright intel' from .h -> .hpp (if not already hpp).

    * Replaced all references to .h with .hpp in documentation,
    source files, cmake collateral, example code, and swig interface
    files.

    * Replaced cmake variable module_h with module_hpp.

    * Intentionally left upm.h since this file currently does not
    contain code (documentation only).

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/rpr220/rpr220.hpp

@@ -0,0 +1,115 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/gpio.h>
+
+namespace upm {
+
+/**
+ * @brief RPR220 IR Reflective Sensor library
+ * @defgroup rpr220 libupm-rpr220
+ * @ingroup seeed gpio light tsk hak
+ */
+/**
+ * @library rpr220
+ * @sensor rpr220
+ * @comname RPR220 IR Reflective Sensor
+ * @altname Grove IR Reflective Sensor
+ * @type light
+ * @man seeed
+ * @web http://www.seeedstudio.com/wiki/Grove_-_Infrared_Reflective_Sensor
+ * @con gpio
+ * @kit tsk hak
+ *
+ * @brief API for the RPR220-based Grove IR Reflective Sensor
+ * 
+ * UPM module for the Grove IR reflective sensor. The sensitivity
+ * can be adjusted with the potentiometer on the sensor module. It
+ * has a range of approximately 15 mm, and a quick response time.
+ *
+ * It detects high-contrast dark areas on a light background.
+ *
+ * This module allows the user to determine the current status
+ * (black detected or not). Additionally, if desired, an interrupt
+ * service routine (ISR) can be installed that is called when
+ * black is detected. Either method can be used, depending on your
+ * use case.
+ *
+ * @image html rpr220.jpg
+ * @snippet rpr220.cxx Interesting
+ * @snippet rpr220-intr.cxx Interesting
+ */
+  class RPR220 {
+  public:
+    /**
+     * RPR220 constructor
+     *
+     * @param pin Digital pin to use
+     */
+    RPR220(int pin);
+
+    /**
+     * RPR220 destructor
+     */
+    ~RPR220();
+
+    /**
+     * Gets the status of the pin; true means black has been detected
+     *
+     * @return True if the sensor has detected black
+     */
+    bool blackDetected();
+
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+    void installISR(jobject runnable);
+#else
+    /**
+     * Installs an ISR to be called when
+     * black is detected
+     *
+     * @param fptr Pointer to a function to be called on interrupt
+     * @param arg Pointer to an object to be supplied as an
+     * argument to the ISR.
+     */
+    void installISR(void (*isr)(void *), void *arg);
+#endif
+
+    /**
+     * Uninstalls the previously installed ISR
+     *
+     */
+    void uninstallISR();
+
+  private:
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+    void installISR(void (*isr)(void *), void *arg);
+#endif
+    bool m_isrInstalled;
+    mraa_gpio_context m_gpio;
+  };
+}
+
+