Refactored CMakeLists.txt

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

lib/main/core/piinit.h

@@ -63,7 +63,7 @@ private:
 	explicit PIInit();
 	void setFileCharset(const char *charset);
 	bool fileExists(const PIString & p);
-	PRIVATE_DECLARATION
+	PRIVATE_DECLARATION(PIP_EXPORT)
 	char * file_charset;
 };