bug#15010: 24.3; mark more checkdoc options as 'safe-local-variable

[Jörg Walter]

Hi,

I suggest that in checkdoc.el, some more variables can be set as 'safe-local-
variable by default. Right now I use these additions:

     (put 'checkdoc-verb-check-experimental-flag 'safe-local-variable 
'booleanp)

     (put 'checkdoc-spellcheck-documentation-flag 'safe-local-variable 
'booleanp)
     (put 'checkdoc-ispell-list-words 'safe-local-variable 'checkdoc-list-of-
strings-p)

     (put 'checkdoc-proper-noun-regexp 'safe-local-variable 'stringp)
     (put 'checkdoc-common-verbs-regexp 'safe-local-variable 'stringp)

Having these as file-local variable by default would be a major convenience 
when doing batch checking of Lisp files. Right now I need to include the above 
statements on the command line.

-- 
Mit freundlichen Grüßen,

        Jörg Walter