Fix the issue given NULL inlMask

Fix the issue given NULL inlMask

Fix the issue given NULL inlMask

Fix the issue given NULL inlMask

Fix the issue given NULL inlMask

Conflicts:
	modules/calib3d/src/rhorefc.cpp

Previously, certain test failures by the method RHO would result in an
error blaming RANSAC instead. The fix involves a parameter change to
several functions in test_homography.cpp.

The code has been refactored in response to feedback on Pull Request

Also, outputZeroH() now also zeroes the inlier set, much like
outputModel().

Previously, the output mask of inliers could remain completely
uninitialized. This fix is the first part of a solution.

The inverted JtJ does not multiply itself, but rather Jte. Correct this
in the comment.

Added explicit casts to silence warnings in fundam.cpp and rhorefc.cpp.

Deleted SSE code from master branch.
Slight cleanups in fundam.cpp were made as a consequence.

Added a mention within calib3d.hpp that the flag RHO is available as an
option on calls to findHomography().

- updated return value of points_classifier sample