t/MarkdownData.t failures (because of locale?)

[eserte]

On a few of my smokers (it seems only freebsd 12 is affected) the t/MarkdownData.t test fails if a German locale is in effect (LC_ALL=de_DE.UTF-8):

#   Failed test 'get date four'
#   at t/MarkdownData.t line 100.
#          got: 'Nov. 22, 2015 20:23'
#     expected: 'Nov 22, 2015 20:23'

#   Failed test 'get date one'
#   at t/MarkdownData.t line 100.
#          got: 'Nov. 22, 2015 20:23'
#     expected: 'Nov 22, 2015 20:23'

#   Failed test 'get date three'
#   at t/MarkdownData.t line 100.
#          got: 'Nov. 22, 2015 20:23'
#     expected: 'Nov 22, 2015 20:23'

#   Failed test 'get date two'
#   at t/MarkdownData.t line 100.
#          got: 'Nov. 22, 2015 20:23'
#     expected: 'Nov 22, 2015 20:23'
# Looks like you failed 4 tests of 22.
t/MarkdownData.t ...... 
Dubious, test returned 4 (wstat 1024, 0x400)
Failed 4/22 subtests 

[eserte]

This is still the case in App-Followme-1.99