sympy/sympy — pull request #7815 by cbm755 (2014-08-01 11:33:08+00:00)
Title: Issue #7792 made `x < I` different from `I < x`: fix and add tests

I noticed that #7792 makes `I < x` raise an error. But `x < I` is unevaluated. Here's an attempt to fix.

Also, add tests.