[win32] Integrate mainline

p4raw-id: //depot/win32/perl@380

diff --cc t/lib/thread.t
index 798adc1,9810ae4..9810ae4
mode 100644,100755..100644
--- 1/t/lib/thread.t
--- 2/t/lib/thread.t
+++ b/t/lib/thread.t

diff --cc t/op/nothread.t
index acc2089,7d42d27..7d42d27
mode 100644,100755..100644
--- 1/t/op/nothread.t
--- 2/t/op/nothread.t
+++ b/t/op/nothread.t