escaped quoting bug in Perl v5.8.8

[patch]

Escaped quotes are being returned in formats as \xF7\xB0\x80\x84 (utf8-encoded \x{1F0000}) instead of the proper '. This is happening in all two CPAN Testers’ reports for Perl v5.8.8 and no other versions. The other reports from v5.8.x are v5.8.5 and v5.8.9, which do not have this problem.

Here are the related CPAN Testers’ reports:

• http://www.cpantesters.org/cpan/report/bd1ce128-6eaa-11e3-8750-8d470c5d3a7d
• http://www.cpantesters.org/cpan/report/c320b66a-6fc9-11e3-91a4-85750ba9aafd

Here are the three failing tests, which are the same in both reports:

#   Failed test 'single quote itself'
#   at t/from_uts35.t line 57.
#          got: '1 o÷°€„clock'
#     expected: '1 o'clock'
# Looks like you failed 1 test of 41.
t/from_uts35.t ........ 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/41 subtests 

#   Failed test at t/quoting.t line 16.
#          got: '÷°€„123÷°€„'
#     expected: ''123''

#   Failed test at t/quoting.t line 17.
#          got: '#÷°€„#'
#     expected: '#'#'
# Looks like you failed 2 tests of 7.
t/quoting.t ........... 
Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/7 subtests