relax SVN archive

Fixed the arg unit tests of state.load() and state.save() to use 'dir_name' rather than 'dir'.

Fix for the load of program state unit test to use the 'dir_name' arg instead of 'dir'.

Changed all the 'dir' args to 'dir_name' in the generic_fns.state module.

Changed all the 'dir' args to 'dir_name' in the state.load() and state.save() user functions.

Modified the state base class unit tests to use the new saved state file.

This file is located in test_suite/shared_data/saved_states/.

Created a simple saved program state file for the state.load() unit tests.

Modified open_read_file() and open_write_file() to handle file descriptors, by returning the arg.

Changed the 'file' arg to 'state' in the functions of the generic_fns.state module.

More fixes for the state.load() and state.save() arg unit tests.

Modified the base class unit tests of state.load() and state.save() to use the arg 'state'.