[Tizen] Implementation of reinstallation option to support RDS mode in SDK

This commit enables a possibility to reinstall a widget by SDK
in RDS mode. In this mode SDK copy only modified files to the device and
also a file named rds_delta which stores what must be changed
in the application directory. The rds_delta file is parsed by RDSDeltaParser
class and then all changes are applied into the application directory.

BUG=XWALK-2687

better be const char kRDSDeltaFile[]