[Windows][Clang] Ship libFuzzer runtime in Clang Windows package

Ship the libFuzzer runtime on Windows as is currently done for libFuzzer
on other platforms.

Bug: 884707
Change-Id: I543d8c2a310d58f61a0f0fb966420d6b4879ec21
Reviewed-on: https://chromium-review.googlesource.com/1229078Reviewed-by: Reid Kleckner <rnk@chromium.org>
Commit-Queue: Jonathan Metzman <metzman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591918}

tools/clang/scripts/package.py

@@ -278,6 +278,7 @@ def main():
   elif sys.platform == 'win32':
     want.extend(['lib/clang/*/lib/windows/clang_rt.asan*.dll',
                  'lib/clang/*/lib/windows/clang_rt.asan*.lib',
+                 'lib/clang/*/lib/windows/clang_rt.fuzzer*.lib',
                  'lib/clang/*/lib/windows/clang_rt.profile*.lib',
                  'lib/clang/*/lib/windows/clang_rt.ubsan*.lib',
                  ])