Disable LLVM_ENABLE_TIMESTAMPS by default

This change is based on the discussion from http://lists.llvm.org/pipermail/llvm-dev/2016-May/098990.html.

The goal is to make the default LLVM configuration build deterministically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268441 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed