feat(library/vm/vm): use small object allocator for VM objects
feat(library/vm/vm): use small object allocator for VM objects

dselsam/lean,dselsam/lean,digama0/lean,soonhokong/lean-windows,fpvandoorn/lean,leanprover-community/lean,rlewis1988/lean,digama0/lean,leanprover-community/lean,Kha/lean,johoelzl/lean,dselsam/lean,rlewis1988/lean,fpvandoorn/lean,soonhokong/lean-windows,leanprover-community/lean,leanprover/lean,Kha/lean,dselsam/lean,avigad/lean,digama0/lean,johoelzl/lean,soonhokong/lean-windows,johoelzl/lean,soonhokong/lean-osx,soonhokong/lean-windows,soonhokong/lean-osx,leanprover-community/lean,johoelzl/lean,fpvandoorn/lean,fpvandoorn/lean,fgdorais/lean,johoelzl/lean,dselsam/lean,leodemoura/lean,leanprover/lean,Kha/lean,leanprover-community/lean,digama0/lean,Kha/lean,rlewis1988/lean,leodemoura/lean,digama0/lean,Kha/lean,soonhokong/lean-windows,fgdorais/lean,fgdorais/lean,leanprover/lean,fgdorais/lean,leodemoura/lean,leanprover/lean,avigad/lean,soonhokong/lean-osx,johoelzl/lean,fpvandoorn/lean,soonhokong/lean-osx,leodemoura/lean,fgdorais/lean,rlewis1988/lean,leodemoura/lean,avigad/lean,soonhokong/lean-osx,leanprover/lean,leodemoura/lean,avigad/lean,rlewis1988/lean,dselsam/lean,leanprover-community/lean,avigad/lean,leanprover/lean,fgdorais/lean,digama0/lean,avigad/lean,rlewis1988/lean,fpvandoorn/lean,Kha/lean