add aligned_alloc(size_t), eventually aligned_alloc(size_t, size_t) can be removed at some point
add aligned_alloc(size_t), eventually aligned_alloc(size_t, size_t) can be removed at some point

git-svn-id: 4e7379b20b57f8e3dde5a0b7363f233184647162@1804 4e380d45-d1fd-0310-85a7-d18ec86df0ad

sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp,sriram-mahavadi/extlp