- Modified ICCompressorFree to properly free the initialized variables
  from ICSeqCompressFrameStart.

use a modal dialogbox just like Windows does.  This helps apps that
subclass the propsheet's wndproc.

- Fixed third parameter (should return the amount of used and not
  needed memory).

TOKEN_QUERY | TOKEN_IMPERSONATE rights, not 0.

Ferenc Wagner).

handle table.

Corresponding tests.

impersonation token.

parameters.