[TASKMGR]

[TASKMGR]
- Add routine to query process index from performance data
- Remove process page index caching, query the index using the new routine
- Fixes "ghost processes" in the task manager, which were shown due to data access with invalid indexes
- Some changes for improved performance: use local process id's where suitable, only start checking for new processes if the item performance data and listview counts differ
See issue #4661 for more details.

svn path=/trunk/; revision=46812