Alsdev: Issue with search paths for prolog projects

[kenbowen]

[Described for vqueens below, but happens for the other projects in ~visual]

1. Start alsdev
2. Prolog > Open ~ALSProlog/examples/visual/vqueens.ppj
3. Do ?- listing. in the console; should show no clauses.
4. Open (no Load) ~ALSProlog/examples/visual/vqueens.ppj
5. Again do ?- listing. in the console; should show no clauses.
6. Toggle the Prolog Files arrow; Should show the file vqueens.pro.
7. Toggle the Search Individual Directories arrow; It shows no entries.
8. Click the (Re)Load button; No /Apparent/ effect an extra ?- now on the last console line.
9. Again do ?- listing. Now shows all the clauses for vqueens.pro.

In vqueens.ppj, no search directories are listed: search_dirs = [].
However, the project contains:

primary_project_dir = '/Users/ken/ALS/GitHub/ALSProlog/examples/visual'

Almost certainly this is what is being used to find vqueens.pro. (Verify this).
The slot ‘primary_project_dir’ gets it’s value when the project is created and saved.
Either:
A) Add the path for primary_project_dir to search_dirs at that time
or
B) Block the system from using the value of primary_project_dir for searching (unless it has been added to search_dirs).

Also (either way), show the primary_project_dir path on the specification panel.