sysutils/apachetop: update 0.12.6 -> 0.18.4

• moved to github
• Fix compile
• Fix mis-spelled word

PR: 227865
Submitted by: ndowens@yahoo.com
Reported by: Thomas-Henning von Kamptz <tomsoft@mac.com>
Reviewed by: koobs, danfe
Approved by: Lukasz Wasikowski <lukasz@wasikowski.net> (maintainer)