Integrate:

Integrate:
[ 18950]
Cygwin doesn't like initing the $0 mutex in perl_construct()
(Too early? If inited there the pthread_mutex_init() returns
an integer much too large be an errno), but initing the mutex
later, in perl_alloc(), seems to be okay with Cygwin, and also
with Linux.
p4raw-link: @18950 on //depot/perl: 7d4724a48fc64f7514654a326453c9b631d3a294

p4raw-id: //depot/maint-5.8/perl@18953
p4raw-integrated: from //depot/perl@18949 'merge in' perl.c (@18935..)