find_package: Refactor in support of recursion
Separate argument handling and actual operation of the find_package
command into separate methods. This is preparatory to adding improved
support for transitive dependencies and will allow nested calls to be
set up using structured data types, rather than having to perform all
communication via a constructed argument list.
As a consequence, the sets of required and optional components, as well
as the component list string, are now members rather than local
variables. This also allows us to drop some parameters and simplify how
we set the variables indicating which components are required.
2 files changed
