bug#8312: key bindings without function names in manual

[Karl Berry]

The Specify Coding node of the emacs 23.3 manual says:

    ... by typing `C-x <RET> r CODING-SYSTEM <RET>'
    ... or type `C-h C <RET>'.

It has always been traditional to give function names in the manual as
well as key bindings (as stated in the Commands node :).
Could the names be inserted here?

The nodes Text Coding, Communication Coding, File Name Coding,
Terminal Coding, and probably others, also just list bare key bindings.

Thanks,
Karl