Merge pull request #25 from ComputerNerd/moreLibc

Re-add memmove; this version is claimed to actually work.

Revert mistakenly removed memset, which is also re-added.
Revert "Restore memset and fix memmove"
Bring back memset.
Merge pull request #27 from Jonimoose/revert-25-moreLibc

Revert "Restore memset and fix memmove"

That memmove is still broken. TEST YOUR CODE PLZTHX.
Lets try this again