proton: Lock on write access to the dist/ directory

Steam needs to be able to run proton several times in parallel without it becoming corrupted.
ValveSoftware · Mar 16, 2018 · 7a20ea9 · 7a20ea9
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commit 7a20ea9
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diff --git a/build_proton.sh b/build_proton.sh
@@ -409,6 +409,7 @@ cd "$TOP"
 tar -C build/dist -c . | gzip -c -1 > dist/proton_dist.tar.gz
 
 cp -a toolmanifest.vdf dist/
+cp -a filelock.py dist/
 cp -a proton dist/
 if [ "$PLATFORM" == "Darwin" ]; then
     cp -a LICENSE.osx dist/LICENSE