that lets you suspend computation after a specified period of idleness.
This is necessary to allow some machines to go into low-power mode
when they're not being used.
- Change the wording of some existing prefs; for example, changed
"Do work while computer is in use?" to
"Suspend work while computer is in use".
The former is confusing - if you say yes, BOINC may in fact
NOT do work while the computer is in use,
due to other factors (time of day, etc.)
TODO: HOST_INFO::users_idle() should be changed so that it
returns the idle time
(rather than telling you whether we've been idle for X)
svn path=/trunk/boinc/; revision=13193