ra_malloc: align returned memory segments
ra_malloc: align returned memory segments

Some architectures like Sparc require aligned memory access, as in, they
lack operations to work around unaligned memory access.  Workarounds are
relatively expensive, so no need to add memory padding conditionally,
it's better to always return aligned memory.

grobian/carbon-c-relay,grobian/carbon-c-relay,grobian/carbon-c-relay