mdInput, mdSelect: bottom border for disabled input or select is not in one line with not disabled input

[montgomery1944]

mdInput, mdSelect: bottom border for disabled input or select is not in one line with not disabled input or select bottom border.

Demo can be found at: http://codepen.io/anon/pen/RagQXQ.

You can see, that disabled input bottom border is 1px above the bottom border of not disabled input.

Tested with jQuery 2.2.2, Angular 1.5.2 and Angular Material 1.1.0-rc1.

I can provide a pull request with fixes for this issue, including tests, if this is going to help.