tree 9e5f8526a5cfd93d2076e528968db872e4869513
parent b4b4a77848f1c726134ace82509b6adb9f8e7055
author Jason Evans <jasone@canonware.com> 1476294027 -0700
committer Jason Evans <jasone@canonware.com> 1476294027 -0700

Remove ratio-based purging.

Make decay-based purging the default (and only) mode.

Remove associated mallctls:
- opt.purge
- opt.lg_dirty_mult
- arena.<i>.lg_dirty_mult
- arenas.lg_dirty_mult
- stats.arenas.<i>.lg_dirty_mult

This resolves #385.