Todd Gamblin bf610a379f Clean up exceptions and function names in directives. ...

- Functions returned by directives were all called `_execute`, which made
  reading stack traces hard because you couldn't tell what directive a
  frame came from.
  - renamed them all to `_execute_<directive>`

- Exceptions in directives were only really used in one or two places --
  get rid of the boilerplate init functions and let the callsite specify
  the message.

2017-09-30 02:06:59 -07:00

..

spack

Clean up exceptions and function names in directives.

2017-09-30 02:06:59 -07:00