Better install output (#5714)

* Do not call setup_package for fake installs

- setup package could fail if ``setup_dependent_environment`` or other
  routines expected to use executables from dependencies

- xpetsc and boost try to get python config variables in
  `setup_dependent_package`; this would cause them not to be
  fake-installable

* Remove vestigial deptype_query argument to Spec.traverse()

- The `deptype_query` argument isn't used anymore -- it's only passed
  around and causes confusion when calling traverse.

- Get rid of it and just keep the `deptypes` argument

* Don't print redundant messages when installing dependencies

- `do_install()` was originally depth-first recursive, and printed "<pkg>
  already installed in ..." multiple times for packages as recursive
  calls encountered them.

- For much cleaner output, use spec.traverse(order='post') to install
  dependencies instead

0 files changed, 0 insertions, 0 deletions