The project dir defined independently in the any operating system and file system.

The main features:
- in the src/define_oil_characteristics.sce was replaced '%T' and '%F' to
  the 'TRUE', 'FALSE';
- in the src/define_oil_characteristics.sce was replaced '1' and '2' to the
  'GTE_OIL', 'RED_OIL';
- in the src/define_oil_characteristics.sce was added functions, that
  independently define the path to the directory with source code;
- the early defined source code directory used for definition the 'data'
  directory.


Signed-off-by: Oleg <olgerd27@gmail.com>