- Add some missing IO_ERROR definitions to the DDK and add some tags

- Add some missing IO_ERROR definitions to the DDK and add some tags
- Fix IoSetThreadHardErrorMode... it was reading the TEB instead of the PETHREAD.
- Optimize Error Logging: Use a static work item instead of allocating one each time, and don't use a spinlock for the buffer count, when we can use interlocked functions instead.
- Log Entries can have Device AND/OR Driver Objects, not just a single one. They must also be referenced/dereferenced on allocation/free.
- Rewrite IopLogWorker to properly deal with Device/Driver objects and querying their names, as well as with additional strings that the caller might be sending.

svn path=/trunk/; revision=22734