bug#7700: 24.0.50; C-y binding withing Isearch mode

[Dani Moncayo]

> One solution to fix this would be to swap the bindings of C-y and M-y withing 
> Isearch mode.

Or even better: make C-y and M-y behave in Isearch "like" in normal
editing (including minibuffer input):
- C-y --> Add text X to the seach text, being X the text that would be
yanked by C-y in normal editing.
- M-y --> If last command was C-y, replace just-yanked text (X) with
the previous text from kill ring.


In this case, the command currently bound to C-y (within Isearch mode)
would have to be bound to another key.

--
Dani Moncayo

PS: My previous post was in HTML format. I'm sorry.