GCC optimizations

[Sergey Manucharyan]

Hi all!

This is not just Lunar question, but
since Lunar gives an option "interactively"
adjust optimization flags, many users might
be interested in this.

I'm not so experienced in CPU optimization and
I don't know, is there "backward compatibility"
from the GCC's point of view, i.e. if I like to use
"-msse", does it mean I don't need to use "-mmmx"
(as a predecessor)?
The site's FAQ doesn't cover such issues well.
More other options are dubious also.
I'd like to "squeeze" from the CPU more,
but the being on the safe side is makes sense too :)

Sergey