bug#17027: [PATCH] grep: prefer regex to DFA for ANYCHAR in non-UTF8 locales

[Paul Eggert]

As the patch went partway in using bool in dfa.c, I took the liberty of 
converting the rest of the DFA internals to use bool when that seemed to 
make the code clearer and/or the executable smaller.  I didn't change 
the external API.  I installed the attached.

0001-grep-prefer-bool-in-DFA-internals.patch
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