Stop using NXIdleTime in Mac client

[kc8apf]

NXIdleTime is a deprecated API in OS X that is very likely to disappear very soon. A replacement for its usage should be found.

[romw]

IIRC, Apple has already been in contact with us over that and a workaround has already been implemented to support 10.6.

NXIdleTime was being used since it supported monitoring keyboard and mouse activity when the client was being used as a daemon.

[kc8apf]

Is the workaround available in a built version of the OS X client?

[romw]

It looks like it is in the 6.6 version of BOINC, go ahead and give it a whirl.

[charlief]

As of BOINC 6.6.12, BOINC uses NxIdleTime?() whenever that API is available, otherwise it uses IOHIDGetParameter(). This is because NXIdleTime() works proprely even when BOINC is run as a launchd daemon as user boinc_master on all OS 10 versions whch support it, but IOHIDGetParameter() works in that situation only in later versions of OS X.

As a result, BOINC (version 6.6.12 and later) continues to use NXIdleTime() through OS 10.5.x, and will automatically switch to IOHIDGetParameter() in O 10.6 (which has removed the NXIDleTime() API).

[Nicolas]

In r17432, r17434, and r17436.