Add more allocation entrypoints to MallocDebug
Add more allocation entrypoints to MallocDebug

Summary: Add support for calloc, memalign and posix_memalign. They are not based on malloc in glibc, so need their own overrides.

Reviewed By: minjang

Differential Revision: D19566467

fbshipit-source-id: b80025787baef6fdaf4cddb572c593f0b3b4b764

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