* 2.8:
Fix Clidumper tests
Enable the fixer enforcing fully-qualified calls for compiler-optimized functions
Apply fixers
Disable the native_constant_invocation fixer until it can be scoped
Update the list of excluded files for the CS fixer
With this refactoring comes a decoupling of the validator from the structure of
the underlying metadata. This way it is possible for Drupal to use the validator
for validating their Entity API by using their own metadata layer, which is not
modeled as classes and properties/getter methods.
