bug#21266: [PATCH] dfa: simplify for non-POSIX locales

[Norihiro Tanaka]

Now dfa is not support range, collating element, equivalent class in
non-POSIX locales.  We can do dfa more simply by removing codes for them.


First, I made update dfaexec_main.  Now transit_state is called only
when next character matches with ANYCHAR, and match_anychar always
returns the length of the multibyte character for next character at all
positions in the state.  So we can remove match_anychar.  Further more,
we can also remove check_matching_with_multibyte_ops, which is caller
for match_anychar.

Second, dfa does not support collating element, we can also simplify
transit_state.

In addition, simplify transit_state_singlebyte.

0001-dfa-simplify-for-non-POSIX-locales.patch
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