add initial RTOS support

now without io devices and console

git-svn-id: svn://db.shs.com.ru/pip@683 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

src_main/system/pilibrary.cpp

@@ -17,6 +17,8 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#ifndef PIP_FREERTOS
+
 #include "pilibrary.h"
 #include "piincludes_p.h"
 #ifndef WINDOWS
@@ -107,3 +109,5 @@ void PILibrary::getLastError() {
 	else liberror.clear();
 #endif
 }
+
+#endif // PIP_FREERTOS