bug#23325: 25.0.92; insert-char: cannot find all chars if input is unicode name

[Tino Calancha]

> Yes, it should show a method that works; patches welcome.

With attached patch:

`describe-char' on 0x79c1 shows:
to input: type "C-x 8 RET 79c1"

IOH, for catched entries in `ucs-names' (e.g. 0x304d) it shows as usual:
to input: type "C-x 8 RET 304d" or "C-x 8 RET HIRAGANA LETTER KI"

descr-text.patch
Description: Text document