aligned_alloc is a standard lib function and has been in glibc since 2.16 and in the C11 standard. It has semantics similar to malloc/calloc for several analyses/transforms.
- update target library info - update passes to be aware of aligned_alloc in ways similar to malloc, calloc, etc.
This change will also be useful to LLVM generators that need to allocate buffers of vector elements larger than 16 bytes (for eg. 256-bit ones), element boundary alignment for which is not typically provided by malloc.