Make 'byte-compile-info*' functions more logical

Make 'byte-compile-info*' functions more logical

* lisp/emacs-lisp/byte-run.el (byte-compile-info): New function
that's more flexible that replaces 'byte-compile-info-string' and
'byte-compile-info-message'.
(byte-compile-info-string): Make obsolete.
(byte-compile-info-message): Ditto.

* lisp/international/ja-dic-cnv.el (skkdic-convert-okuri-ari)
(skkdic-convert-postfix, skkdic-convert-prefix)
(skkdic-collect-okuri-nasi, skkdic-set-okuri-nasi):
* lisp/finder.el (finder-compile-keywords):
* lisp/cus-dep.el (custom-make-dependencies): Adjust callers to
use the new function.