If MAP_ALIGNED_SUPER is not available, don't use it. (#3269)
If MAP_ALIGNED_SUPER is not available, don't use it. (#3269)

A fallback definition of 0 means that performing
| MAP_ALIGNED_SUPERPAGES is a no-op.
ponylang/ponyc,ponylang/ponyc,jemc/ponyc,dipinhora/ponyc,dipinhora/ponyc,sgebbie/ponyc,cquinn/ponyc,jemc/ponyc,sgebbie/ponyc,kulibali/ponyc,cquinn/ponyc,sgebbie/ponyc,ponylang/ponyc,sgebbie/ponyc,kulibali/ponyc,cquinn/ponyc,kulibali/ponyc,kulibali/ponyc,jemc/ponyc,dipinhora/ponyc,sgebbie/ponyc,cquinn/ponyc