use correct vector/list syntax for keybindings?

[Robert Pluim]

In  "(emacs) Init Rebinding", it says

    If a vector element is a character, write it
    as a Lisp character constant: ‘?’ followed by the character as it would
    appear in a string.

There are a fair few bindings in the emacs source that forget the '?'
and do eg

    [(control c)]

Is it worth going through and changing those?

Robert