bug#28043: [PATCH] Optimize skkdic conversion

[Eli Zaretskii]

> From: npostavs@users.sourceforge.net
> Date: Thu, 10 Aug 2017 23:25:17 -0400
> 
> While waiting for a bootstrap, I thought the skkdic conversion was
> looking a bit slow.  The following patches reduce the time needed to
> less than a third of the original (2m30 to 45s measured using a
> non-optimized Emacs).  The main speedup comes from optimizing
> lookup-nest-alist and set-nested-alist for the case where the key is a
> string.  I suspect it might be possible to optimize even more by
> reorganizing things, but my ignorance of Japanese makes that difficult.
> 
> Each commit message has the time I measured after applying.  I checked
> that the generated ja-dic.el is identical to what was generated before.

Thanks.  CC'ing Handa-san, who could perhaps suggest more
optimizations.

I guess you've verified that the results are identical after these
optimizations?  If so, I see no reason not to push in a few days.