Scope chaining projects #630
Description
Projects should be able to be chained from one to another.
Project_a should be able to have a context that depends on a context from Project_b.
Examples:
- Application A has a project with a context based on a gcc toolchain. Ideally they should be able to have that context depend on the system administrator's project, which has a context to supply the gcc toolchain
- Application A's project wants to depend on application B's so they can test they compile together.