neo-storm has developed more wrappers for syscall APIs, so they can and should be used as a drop-in replacement for pkg/vm/api. Moving it out of vm, as it's not exactly related to the VM itself.
Imported from CityOfZion/neo-storm (d022d46cd851de78ee041851a80dc34e3b3b68d1).
Imported from CityOfZion/neo-storm (5065465e39fd2b308c487f49f75f517620139660).