Clang build.py: add zlib to linker search path so that cmake can find it

There appear to have been some changes in LLVM that affect how cmake
searches for zlib.

Bug: 1061189
Change-Id: Ie834d3b1e67bb4ed0427e788b67310d33127c6c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2101301
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Hans Wennborg <hans@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#750133}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f8b71941c8cad4ef9615b08e71c50d11409b9f0a
2 files changed