use single array for storing pa_core hook lists, add sink state changed hook, drop...

use single array for storing pa_core hook lists, add sink state changed hook, drop NO_HOOKS flags for sink inputs/source outputs, listen for resume events in module-suspend-on-idle.c

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1640 fefdeb5f-60dc-0310-8127-8f9354f1896f