util: switch to new stacktrace syntax
util: switch to new stacktrace syntax

https://github.com/erlang/otp/pull/1634

scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris