(devel/R-pkgcache) Updated  1.1.1 to 1.2.2

# pkgcache 1.2.2

* The default location of the cache has changed to align with the
  standard `tools::R_user_dir()` cache location. To clean up your old
  cache call `pkgcache:::cleanup_old_cache_dir()`.

# pkgcache 1.2.1

No user visible changes.

# pkgcache 1.2.0

* New `repo_add()`, `repo_get()`, `repo_resolve()` and `with_repo()`
  functions to query and manipulate repositories.

* `meta_cache_*()` functions now handle `getOption("repos")` changes
  correctly.

* Failed metadata downloads now do not trigger metadata updates (#52).

* New `bioc_release_version()`, `bioc_devel_version()`, `bioc_repos()`
  helper functions to deal with Bioconductor repositories.

* Metadata cache functions, e.g. `meta_cache_deps()` etc. now allow
  specifying the dependency types in all lowercase (#54).

(mef)