Makenemo cleaning
While trying to understand how makenemois working, I found several repeated actions (directories/files creation/edition), useless defined/exported variables and slowing down due tu useless loops.
Consequently, I tried to rewrite partially the "configuration phase" of the makenemo script in a more simplified and understandable way (at least to me).
If @devs find this version cleaner and faster than the older one, we can merge it into the main branch.
- removed useless variables &
export - removed duplicated files/directories operations
- removed useless loop