[automerger skipped] Add libwinpthread-1.dll to windows sdk, copied from clang-r365631b am: 4f5f0234b6 am: a84a159a42 -s ours am: 15933fb063 -s ours am: 1eb61fa822 -s ours am: 27196d8818 -s ours

am skip reason: Change-Id I53ff5f9769aa527cd340bc08cb494005428fc646 with SHA-1 4f5f0234b6 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/10522128

Change-Id: I1b802c9ddc491577c1d2495e4ac2b7fcd71523e1