- Added a new interface for Specs to pass build information
- Calls forwarded from Spec to Package are now explicit
- Added descriptor within Spec to manage forwarding
- Added state in Spec to maintain query information
- Modified a few packages (the one involved in spack install pexsi) to showcase changes
- This uses an object wrapper to `spec` to implement the `libs` sub-calls.
- wrapper is returned from `__getitem__` only if spec is concrete
- allows packagers to access build information easily
* Rename packages
* Upcasing depends_on() in packages.
* Downcased extends('r')
* Fixed erroneously changed URL that had slipped through.
* Fixed typo
* Fixed link from documentation into package source code.
* Fixed another doc problem.
* Changed underscores to dashes in package names.
* Added test to enforce lowercase, no-underscore naming convention.
* Fix r-xgboost
* Downcase more instances of 'R' in package auto-creation.
* Fix test.
* Converted unit test packages to use dashes not underscores
* Downcase `r` in the docs.
* Update module_file_support.rst
Fix r->R for class R.
