By Supantha Mukherjee STOCKHOLM (Reuters) -Swedish price comparison firm PriceRunner said on Monday it was suing Alphabet-owned Google for about 2.1 billion euros ($2.4 billion), the latest firm to take legal action alleging the search giant manipulated search results. Google in November lost an appeal against a 2.42 billion-euro fine it received in 2017 which found using its own price comparison shopping service gave the company an unfair advantage over smaller European rivals. “They are still abusing the market to a very high extent and haven’t changed basically anything,” PriceRunner Chief …