Replace aligned malloc calls with plain malloc

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extra : amend_source : a37648dac29b42cec9ba77079fd76588a984978e
Re-add support for custom allocators

--HG--
extra : amend_source : 472f1f7117ee5f7306583b320a60407c29992012
Merge pull request #4 from sid0/replace-aligned-malloc

Replace aligned malloc calls with plain malloc