[perl #79880] PATCH: Add Unicode semantics for /iu matching for literal strings

# New Ticket Created by  karl williamson 
# Please include the string:  [perl #79880]
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# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=79880 >


This series of commits causes the regex engine to understand the /u 
modifier on literal strings when /i is used.  These generate EXACTish 
regnodes.

It does this by establishing a new node type, EXACTFU which implies 
using Unicode semantics.

Still remaining to be done in /iu are backreferences and tries.

These commits are also available at:
git://github.com/khwilliamson/perl.git
branch folding

• [perl #79880] PATCH: Add Unicode semantics for /iu matching for literal strings by Father Chrysostomos via RT
• [perl #79880] PATCH: Add Unicode semantics for /iu matching for literal strings by karl williamson
• Re: [perl #79880] PATCH: Add Unicode semantics for /iu matching forliteral strings by karl williamson