Added loclass-functionality into the pm3,the functionality provided by loclass can now be invoked directly from the pm3. Also fixed some issues with how prnlog called PrintAndLog, and added some testdata for the loclass self-tests

client/loclass/fileutils.h

@@ -21,4 +21,5 @@ int saveFile(const char *preferredName, const char *suffix, const void* data, si
  * @param fmt
  */
 void prnlog(char *fmt, ...);
+int fileExists(const char *filename);
 #endif // FILEUTILS_H