* Stop using the C defines LPSHELLFOLDER, LPSHELLVIEW and LPUNKNOWN, and use the respective C++ interfaces instead.
* Change one batch of COM interface pointers into CComPtr-based pointers, and remove associated Release calls (including at least one that was not supposed to be there at all).
* Remove a couple (repeated multiple times) pointless casts.
svn path=/branches/shell-experiments/; revision=63908