Refactored CMakeLists.txt

* new pip_module() macro
 * fixed exports
 * automatic gather all exports and pass them to Doxygen and PICodeParser

lib/main/system/pisysteminfo.h

@@ -26,7 +26,7 @@ class PIP_EXPORT PISystemInfo {
 public:
 	PISystemInfo();
 	
-	struct MountInfo {
+	struct PIP_EXPORT MountInfo {
 		MountInfo();
 		PIString mount_point;
 		PIString device;