Ensure timestamps are not embedded into files when doing a release build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142647 91177308-0d34-0410-b5e6-96231b3b80d8

utils/release/test-release.sh

@@ -246,6 +246,7 @@ function configure_llvmCore() {
     $BuildDir/llvm.src/configure --prefix=$InstallDir \
         --enable-optimized=$Optimized \
         --enable-assertions=$Assertions \
+        --disable-timestamps \
         2>&1 | tee $LogDir/llvm.configure-Phase$Phase-$Flavor.log
     cd $BuildDir
 }