Requirement of SSE2

[Martin Gräßlin]

Hi all,

lately I got a few crash reports indicating that QtQuick requires SSE2:
"This program requires an X86 processor that supports SSE2 extension, at 
least a Pentium 4 or newer"

(e.g. 374023).

Should we add this as a minimum requirement to our release announcement 
and also inform distributions about it? SSE2 Got introduced with Intel 
Pentium 4 (2001). AMD added support for it in 2003. This means hardware 
older than 13-14 years are no longer supported.

Cheers
Martin