Added the ability to switch off indentation linting by setting the value of the indent option to 0. This allows you to ignore indentation in certain files (or even scopes, but that's less useful) but still have a global, project-wide setting enforced. (issue #988)
Added support for disabling all numeric options by setting to false (see #988). Updated tests accordingly.
Merge branch 'override-indent' of git://github.com/jamesallardice/jshint into jamesallardice-override-indent

Conflicts:
	tests/stable/unit/parser.js