Add a stub Kernel#at_exit
Add a stub Kernel#at_exit

By time it could become something real.
Mogztter/opal,suyesh/opal,fazibear/opal,catprintlabs/opal,suyesh/opal,wied03/opal,merongivian/opal,iliabylich/opal,kachick/opal,gausie/opal,jgaskins/opal,Mogztter/opal,Flikofbluelight747/opal,fazibear/opal,c42engineering/opal,domgetter/opal,opal/opal,kachick/opal,gausie/opal,Mogztter/opal,Ajedi32/opal,jannishuebl/opal,bbatsov/opal,Ajedi32/opal,castwide/opal,Mogztter/opal,gabrielrios/opal,opal/opal,gabrielrios/opal,jgaskins/opal,Ajedi32/opal,wied03/opal,jannishuebl/opal,kachick/opal,gausie/opal,jannishuebl/opal,merongivian/opal,opal/opal,fazibear/opal,jgaskins/opal,kachick/opal,castwide/opal,wied03/opal,gabrielrios/opal,Flikofbluelight747/opal,opal/opal,bbatsov/opal,catprintlabs/opal,domgetter/opal,castwide/opal,c42engineering/opal,merongivian/opal,bbatsov/opal,c42engineering/opal,suyesh/opal,iliabylich/opal,Flikofbluelight747/opal,iliabylich/opal,catprintlabs/opal