* U.S. markets poised for slew of data* China&aposs factory sector shows promise* Euro zone PMIs show euro zone recovery intact* ECB easing allays European election fears* Fed minutes show no rush to raise ratesBy John GeddieLONDON, May 22 (Reuters) - U.S. stocks are set to consolidate gains pending a slew of data that will be closely watched for further hints of the Federal Reserve&aposs need to