As part of recent decisions regarding namespace naming conventions, all namespaces will be changed to snake case. ::ReplacementPolicy became ::replacement_policy. Change-Id: Id46cd9d89e9424fd3c5484e2f9c69ef2b73f135b Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45405 Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu> Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>