RE: master 71783e9: Add the string-numeric-lessp function

[Drew Adams]

`string-numeric-lessp' really should follow the Emacs
convention and be called `string-numeric-less-p'.

It's not because `string-less-p' is misnamed that we
should add to this mistake.  `time-less-p' is correctly
named, for example.

Or else the rule should be clarified to incorporate
`-lessp' exceptions, so they are within, and not outside,
the rule.


The following 25 are the only such misnamed predicates
I see (in a pretty minimal setup - there may be some
more in Gnus, Org, etc.).  6 of them end in `-lessp'.

 auth-source-specmatchp
 bool-vector-subsetp
 byte-compile-nilconstp
 byte-compile-trueconstp
 byte-optimize-all-constp
 byte-optimize-zerop
 cl--compiler-macro-typep
 cl--macroexp-fboundp
 coding-system-lessp
 custom-facep
 customize-version-lessp
 default-boundp
 dired-tree-lessp
 eieio--typep
 file-attributes-lessp
 gnus-boundp
 gnutls-error-fatalp
 gnutls-errorp
 hack-one-local-variable-constantp
 hack-one-local-variable-eval-safep
 hack-one-local-variable-quotep
 ls-lisp-string-lessp
 slot-boundp
 string-lessp
 uniquify-item-greaterp

That's 25 out of 438 predicates total whose names end in
`p', which I count at the outset in a pretty minimal setup.

So less than 6% of predicate names that end in `p' do not
follow the rule.  94% follow it correctly.

The following predicates are also wrongly named, but they
should not have prefix `cl-' anyway.  Remove the misguided
prefix and these names will all follow the rule.

 cl-endp
 cl-equalp
 cl-evenp
 cl-minusp
 cl-oddp
 cl-plusp
 cl-subsetp
 cl-tailp
 cl-typep