Some more spec changes!

As I was doing the test for FileOps, I ran into couple spec file
changed: couple of places instead of comparison operator ==, it has
assignment operator =. I changed it and is in the uploaded file.
Need to change: Windows use \ for directory seperation, while linux uses
/, all the test cases use / instead of . We may need to change the rake
to be more specific to the platform to make the test pass properly.
utime_spec: There was no rspec for this method. I wrote one for testing
based off of atime. Attached the one I used.
In windows following is not valid‘NUL’).should == true
since NUL will be treated file, this will throw exception that file not
Also the following is not a valid file name in windows environment
file = ‘/tmp/i_exist’