New in_centcom(x) macro and escape check refactoring

[Sovexe]

About the PR

Creates a new in_centcom(x) macro to check if an atom is located in a centcom area. Refactored nearly all escape checks to use in_centcom rather than checking atom locations against map_settings.escape_centcom

Why's this needed?

Previous escape check methods would fail to consider you as escaped if you were not present on the shuttle at the time of stats output. This meant you could be effectively cheated out of spacebux, objective credit, and even medals by leaving the shuttle to fast in your attempt to be the first to eat all the icecreams.

Changelog

(u)Sovexe:
(+)Changed escape checks to consider you as having escaped if you are anywhere on Centcom at round end.

[pali6]

.loc everywhere is unnecessary as the macro checks area of any atom (doesn't need to be a turf).

[Sovexe]

.loc removed. Macro altered slightly to allow this.