Improve the parsing of the script location to determine the location of .txt files using File::Basename.
Should be platform safe as $program_path will include trailing path separator.
https://developer.symbian.org/oss/API_REF/SHAI/
https://developer.symbian.org/oss/FCL/examples/app/NPR/
https://developer.symbian.org/oss/MCL/utilities
https://developer.symbian.org/sfl/API_REF/Public_API/epoc32/
https://developer.symbian.org/oss/FCL/interim/auxiliary_tools/AgileBrowser
https://developer.symbian.org/oss/FCL/interim/auxiliary_tools/EUserHL
https://developer.symbian.org/oss/FCL/interim/auxiliary_tools/route_generator
https://developer.symbian.org/oss/FCL/interim/auxiliary_tools/simulation_PSY
https://developer.symbian.org/sfl/FCL/interim/desktopsw