Depending on other optimization options, compiler could get confused
into an internal error, and was, probably, building pessimized code
even when working.
Ensure warning-free build, while I'm here. Mark the SSE as having no
effect -- ``--enable-sse'' causes configure to add the HAS_SSE define
to CFLAGS, but nothing in the current release checks for that flag. Ha-ha.
There are SSE implementations of some parts of the code (they are just
no used), so, perhaps, someone can add another patch to make use of them,
when possible.
