New Validation: Assignment of wrong type, according to JSDoc

[p-bakker]

Produce a builder marker when a variable gets assigned a value of a type that is not the same as the type defined in the JSDoc

[p-bakker]

Sample:

/**
 * @type {Boolean}
 */
var test

test = 'hello' //Raise warning

[angelozerr]

To support this issue, I need the following PR ternjs/tern#525 to know tha type comes from comment.

[angelozerr]

See https://github.com/angelozerr/tern-lint/wiki/Validation-JSDoc for configuration of JSDoc