Multi-byte support in 'flex'

[Peter A. Hack]

        I've added support for multibyte characters to 'flex-2.5.4a'.  These
changes do NOT allow multibyte characters to appear in patterns but allow the
input to the generated scanner to contain multibyte characters.  I did not add
support to all 'flex' modes (ex. '-+' to generate a C++ scanner) primarily
because I don't have need for those modes but partly because I don't have time
to develop tests for all of them.
        Is this of any value to GNU?

                                Peter Hack (that's my real name)