Update PNaCl rev in TOOLS_REVISION 11839 -> 11852.
Update PNaCl rev in TOOLS_REVISION 11839 -> 11852.

r11852 | Disable zlib features in LLVM shared lib builds to avoid dependency.

BUG=none
R=mseaborn@chromium.org

Review URL: https://codereview.chromium.org/20347002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11856 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client