investigate undefined subroutine utf8::se bug

[patch]

A single CPAN tester report is reporting the following bug.

# Lingua::Stem::UniNE v0.06, Moo v1.004002, Perl v5.14.3 (C:\strawberry5143\perl\bin\perl.exe)
t\00-load.t ..... ok
Undefined subroutine utf8::se called at C:\strawberry5143\cpan\build\Lingua-Stem-UniNE-0.06-KyTxMK\blib\lib/Lingua/Stem/UniNE.pm line 3.
Compilation failed in require at t\01-stemmer.t line 6.
BEGIN failed--compilation aborted at t\01-stemmer.t line 6.
t\01-stemmer.t .. 
Dubious, test returned 255 (wstat 65280, 0xff00)
Failed 30/30 subtests