Removes `spack.package_base.PackageBase.do_{install,deprecate}` in favor of
`spack.installer.PackageInstaller.install` and `spack.installer.deprecate` resp.
That drops a dependency of `spack.package_base` on `spack.installer`, which is
necessary to get rid of circular dependencies in Spack.
Also change the signature of `PackageInstaller.__init__` from taking a dict as
positional argument, to an explicit list of keyword arguments.
e4927b35d1