maa: add global maa.h and maa.hpp and stop using /usr/include/maa/

* pkg-config now only sees maa.h & maa.hpp
* usage of maa/*.{h,hpp} is still allowed
* examples updated to use maa.{h,hpp}

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

examples/c++/Blink-IO.cpp

@@ -29,7 +29,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 
-#include "gpio.hpp"
+#include "maa.hpp"
 #define DEFAULT_IOPIN 8
 
 static int iopin;