fix(util/rb_tree): do not use thread local storage in template when compiling on OSX with clang++ without Boost

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
fix(frontends/lean/info_manager): do not rely on typeid::before, the behavior is a platform specific

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
fix(tests/lua/slow): reduce test size to avoid stackoverflow on OSX when compiling without Boost

Signed-off-by: Leonardo de Moura <leodemoura@cmacslab5.modck.cs.cmu.edu>