Google has unveiled its latest search innovation – adding Gmail messages into search results. The move is designed to offer Gmail users quick access to the most relevant search results, wherever they happen to be stored, bringing a Google search more in line with the search functionality of a desktop PC or mobile device. “Sometimes the best answer to your question isn’t available on the public web - it may be contained somewhere else, such as in your email,” Google noted on its blog. “We think you shouldn’t have to be your own mini-search engine to find the most useful information - it should just work. A search is a search, and we want our results to be truly universal.” Google gave the example of a user planning a bike…