Cache the inheritance hierarchy for the STI loader
Cache the inheritance hierarchy for the STI loader

Parsing all the source is slow; we only need to do it when the files
change.

KevinLoiseau/manageiq,billfitzgerald0120/manageiq,skateman/manageiq,NickLaMuro/manageiq,agrare/manageiq,gmcculloug/manageiq,romanblanco/manageiq,juliancheal/manageiq,KevinLoiseau/manageiq,KevinLoiseau/manageiq,chessbyte/manageiq,jameswnl/manageiq,mzazrivec/manageiq,mresti/manageiq,NaNi-Z/manageiq,NickLaMuro/manageiq,tzumainn/manageiq,agrare/manageiq,gerikis/manageiq,ailisp/manageiq,ilackarms/manageiq,aufi/manageiq,durandom/manageiq,matobet/manageiq,borod108/manageiq,skateman/manageiq,mkanoor/manageiq,branic/manageiq,tinaafitz/manageiq,KevinLoiseau/manageiq,ManageIQ/manageiq,andyvesel/manageiq,NickLaMuro/manageiq,yaacov/manageiq,mfeifer/manageiq,juliancheal/manageiq,jntullo/manageiq,jvlcek/manageiq,fbladilo/manageiq,borod108/manageiq,d-m-u/manageiq,mkanoor/manageiq,billfitzgerald0120/manageiq,andyvesel/manageiq,josejulio/manageiq,syncrou/manageiq,hstastna/manageiq,jrafanie/manageiq,d-m-u/manageiq,romaintb/manageiq,pkomanek/manageiq,tinaafitz/manageiq,israel-hdez/manageiq,israel-hdez/manageiq,NaNi-Z/manageiq,hstastna/manageiq,gmcculloug/manageiq,syncrou/manageiq,ailisp/manageiq,mzazrivec/manageiq,mresti/manageiq,agrare/manageiq,gerikis/manageiq,branic/manageiq,NaNi-Z/manageiq,durandom/manageiq,maas-ufcg/manageiq,d-m-u/manageiq,KevinLoiseau/manageiq,ilackarms/manageiq,skateman/manageiq,romaintb/manageiq,pkomanek/manageiq,yaacov/manageiq,mkanoor/manageiq,mresti/manageiq,romanblanco/manageiq,romaintb/manageiq,tzumainn/manageiq,fbladilo/manageiq,romaintb/manageiq,maas-ufcg/manageiq,romanblanco/manageiq,KevinLoiseau/manageiq,ManageIQ/manageiq,juliancheal/manageiq,aufi/manageiq,gmcculloug/manageiq,ilackarms/manageiq,jntullo/manageiq,fbladilo/manageiq,durandom/manageiq,israel-hdez/manageiq,matobet/manageiq,chessbyte/manageiq,jrafanie/manageiq,lpichler/manageiq,romaintb/manageiq,josejulio/manageiq,gerikis/manageiq,djberg96/manageiq,maas-ufcg/manageiq,chessbyte/manageiq,yaacov/manageiq,tinaafitz/manageiq,josejulio/manageiq,jntullo/manageiq,josejulio/manageiq,djberg96/manageiq,syncrou/manageiq,mfeifer/manageiq,billfitzgerald0120/manageiq,billfitzgerald0120/manageiq,kbrock/manageiq,ManageIQ/manageiq,matobet/manageiq,NickLaMuro/manageiq,hstastna/manageiq,ailisp/manageiq,tinaafitz/manageiq,aufi/manageiq,ailisp/manageiq,maas-ufcg/manageiq,fbladilo/manageiq,skateman/manageiq,mfeifer/manageiq,lpichler/manageiq,lpichler/manageiq,branic/manageiq,romanblanco/manageiq,kbrock/manageiq,kbrock/manageiq,gmcculloug/manageiq,maas-ufcg/manageiq,borod108/manageiq,andyvesel/manageiq,jrafanie/manageiq,d-m-u/manageiq,branic/manageiq,pkomanek/manageiq,mkanoor/manageiq,andyvesel/manageiq,hstastna/manageiq,gerikis/manageiq,jrafanie/manageiq,aufi/manageiq,jameswnl/manageiq,kbrock/manageiq,syncrou/manageiq,mresti/manageiq,yaacov/manageiq,matobet/manageiq,tzumainn/manageiq,djberg96/manageiq,jameswnl/manageiq,jvlcek/manageiq,romaintb/manageiq,djberg96/manageiq,ManageIQ/manageiq,tzumainn/manageiq,maas-ufcg/manageiq,jameswnl/manageiq,ilackarms/manageiq,borod108/manageiq,chessbyte/manageiq,lpichler/manageiq,juliancheal/manageiq,NaNi-Z/manageiq,agrare/manageiq,mzazrivec/manageiq,israel-hdez/manageiq,jntullo/manageiq,mfeifer/manageiq,mzazrivec/manageiq,jvlcek/manageiq,jvlcek/manageiq,durandom/manageiq,pkomanek/manageiq