49e4e3141 Add blocking_call test for functions with non-void return.
0acd85c63 blocking_call: Workaround for GCC bug with parameter packs in lambdas.
ce47eca32 Work around TSAN false-positive in old versions of GCC
85854b73a Implement allocation page guards
d8b38213f Add missing header include guards
776f7a485 Add Allocator interface and use them throughout marl.

git-subtree-dir: third_party/marl
git-subtree-split: 49e4e314157e8560f6ad620f5ec28a877612f03b