Disable default 16 byte alignment:

I consider this harmful. After spending again over an hour debugging a
weird bug caused by mismatched alignment between Equalizer (default
compiler align) and another library (16 byte align), I really think it's
safer to use the standard alignment by default and let software in need
of a 16-byte align do set it explicitely.
Merge pull request #85 from Eyescale/master

Disable default 16 byte alignment