Update PNaCl TOOL_REVISIONS, 11916->11918
Update PNaCl TOOL_REVISIONS, 11916->11918

Brings in extra flags which the bitcode linker passes through to the native linker

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3577
R=jfb@chromium.org

Review URL: https://codereview.chromium.org/22032002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11921 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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