It's nice to be able to identify mmap's in /proc/PID/vm.
With a bunch of LibC work to support the feature. LibC now initializes AK::StringImpl by default. It's now fine to use AK in LibC/Userland! :^)
I added a dead-simple malloc that only allows allocations < 4096 bytes. It just forwards the request to mmap() every time. I also added simplified versions of opendir() and readdir().
