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/urm37/CMakeLists.txt

@@ -1,5 +1,5 @@
 set (libname "urm37")
 set (libdescription "upm DFRobot URM37 Ultrasonic ranger")
 set (module_src ${libname}.cxx)
-set (module_h ${libname}.h)
+set (module_hpp ${libname}.hpp)
 upm_module_init()

src/urm37/javaupm_urm37.i

@@ -3,10 +3,10 @@
 %include "std_string.i"
 
 %{
-    #include "urm37.h"
+    #include "urm37.hpp"
 %}
 
-%include "urm37.h"
+%include "urm37.hpp"
 
 
 %pragma(java) jniclasscode=%{

src/urm37/jsupm_urm37.i

@@ -3,8 +3,8 @@
 %include "std_string.i"
 
 %{
-    #include "urm37.h"
+    #include "urm37.hpp"
 %}
 
-%include "urm37.h"
+%include "urm37.hpp"
 

src/urm37/pyupm_urm37.i

@@ -7,7 +7,7 @@
 %feature("autodoc", "3");
 
 %{
-    #include "urm37.h"
+    #include "urm37.hpp"
 %}
-%include "urm37.h"
+%include "urm37.hpp"
 

src/urm37/urm37.cxx

@@ -24,7 +24,7 @@
 
 #include <iostream>
 
-#include "urm37.h"
+#include "urm37.hpp"
 
 using namespace upm;
 using namespace std;