Fixed a bug in ansi string caching that didn't take mxp into account.
Fixed a bug in ansi string caching that didn't take mxp into account.

TheTypoMaster/evennia,feend78/evennia,ypwalter/evennia,shollen/evennia,emergebtc/evennia,feend78/evennia,TheTypoMaster/evennia,ypwalter/evennia,ergodicbreak/evennia,emergebtc/evennia,ergodicbreak/evennia,titeuf87/evennia,titeuf87/evennia,ypwalter/evennia,feend78/evennia,ergodicbreak/evennia,titeuf87/evennia,feend78/evennia,jamesbeebop/evennia,emergebtc/evennia,jamesbeebop/evennia,titeuf87/evennia,jamesbeebop/evennia,shollen/evennia,TheTypoMaster/evennia