Some TIFF images consist of only one strip. The magic value 2**32-1 for the
"rows per strip" tag reflects that fact, effectively meaning "infinite".

Fixed doc for Bug #3887

Fixed the non-working code example for NAryMatIterator.
The documentation of NAryMatIterator in file:
modules/core/include/opencv2/core/core.hpp has a working example which
was used for these edits.

Save selected FCC in order to return proper CV_CAP_PROP_FOURCC property value (currently FCC for RGB24 is always returned).

FOURCC code bytes should be placed in the reverse order.

Set correct value of sample size when calling IAMStreamConfig::SetFormat function. For non-RGB media type it can be set to zero value.
(See http://msdn.microsoft.com/en-us/library/windows/desktop/dd373477%28v=vs.85%29.aspx)

Use _com_ptr_t instead of CComPtr in ComPtr wrapper to avoid ATL dependency.