bug#13084: boyer_moore crashes with certain characters in the case table

[Juri Linkov]

> I think i fixed this (revision 111021 on the emacs-24 branch),
> please test.

Thanks, there are no more crashes when using code from
http://debbugs.gnu.org/13041#41

Does this mean there are no more obstacles to filling a translation table
for ignoring equivalence with all character mappings according to the
`decomposition' property?  This would be the first step in this direction.