Greg Becker ca0d9ae7f0 Make builtin flag handlers available in package scope (#8668) ... * Push default flag handlers into module scope * Preserve backwards compatibility of builtin flag handler names Ensure Spack continues to work for packages using the `Package.env_flags` idiom and equivalent. * update docs and tests to match * Update packages to match new syntax		2018-10-09 15:18:31 -07:00
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spack	Make builtin flag handlers available in package scope (#8668)	2018-10-09 15:18:31 -07:00