Adding some fixes to packages that use configure_args function without setting spec set or directly referencing it (#2868)

* Adding 'self.' to the spec call for configure_args

* Updating this to set spec to self.spec

* More updates to the configure_args spec calls

* Another spec issue

* Another spec issue.

* And another spec issue

* Switching cmor back to self.spec.

var/spack/repos/builtin/packages/emacs/package.py

@@ -48,6 +48,7 @@ class Emacs(AutotoolsPackage):
     depends_on('gtkplus+X', when='+X toolkit=gtk')
 
     def configure_args(self):
+        spec = self.spec
         args = []
         toolkit = spec.variants['toolkit'].value
         if '+X' in spec: