[LAU] denormals, cpu flags, and "minor" apps over-reaching

[cal]

Long ago I added some code to yoshimi to deal with denormals (from Jens M Andreasen,
LAD <http://lists.linuxaudio.org/pipermail/linux-audio-dev/2009-August/024707.html>).

Now I'm wondering if it's actually cool for a synth app or plugin to arrogantly go
about changing cpu flags underneath other running apps, eg ardour. I'd like to hear
the thoughts of the wise on whether that's a very bad thing for a "minor" app to be
doing.

cheers, Cal