ENH: Added test cases for relation operation. To ensure behaviour of int. There is a need to add test case which ensure and maintain the behaviour of integer. As per pr #3567, which speed up integer scalar's operations by avoiding the conversion of integer to NumPy Scalar.
scalar relational operation
Moved test_multiarra_relational_operators to test_multiarray.py
fix indentation and nitpicks
Merge branch 'gh-3754'

* gh-3754:
  fix indentation and nitpicks
  Moved test_multiarra_relational_operators to test_multiarray.py
  scalar relational operation
  ENH: Added test cases for relation operation. To ensure behaviour of int. There is a need to add test case which ensure and maintain the behaviour of integer. As per pr #3567, which speed up integer scalar's operations by avoiding the conversion of integer to NumPy Scalar.