EMERGING MARKETS-Brazil stocks rise to key level; Mexico gains

* Brazil's Bovespa stuck near 62,000 points * Mexican stocks clock record high * Bovespa up 0.44 pct; Mexico IPC adds 0.27 percent By Danielle Assalve and Jean Arce SAO PAULO/MEXICO CITY, Jan 23 (Reuters) - Brazilian stocks edged up on Wednesday to just shy of a technical barrier that could limit further gains, while Mexican stocks hit a record high. A vote by U.S. lawmakers to allow the federal government to keep borrowing money through mid-May eased concerns that uncertai