Reorganize files related to prepare module.
- Previsouly, the word "workplace" was used on function names to
identify their purpose. This word differ from variable names which
uses the "workdir" name. This update changes function names related
to prepare module from "workplace" to "workdir" in order to be
consequent in naming both function and variable names.
- Add prepare_printUsage function. This function is called when no
path is provided as argument in the command-line.
- Previously, no verification was performed about the path information
entered in the command-line. This update uses the tcar_printPath
function to transform the path provided in the command-line into a
valid path before using it.
- Previously, both .conf.tpl and .conf file were considered as
possible configuration files to be used as reference to build the
working directory. This brings confusion about what files must be
produced as part of the repository (e.g., documentation,
localization) and what files shouldn't (e.g., design models). This
update changes prepare_getWorkdir and prepare_getWorkdirConf
function to retrieve .conf.tpl files only and exclude .conf files.