ecasound-iam(1): update rt unsafe command list
ecasound-iam(1): update rt unsafe command list

Reworded the documentation of real-time safe and unsafe
commands.

jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2