By Richard Leong | NEW YORK NEW YORK Major stock markets around the globe ended a solid May on a weak **te on Wednesday, while the sterling fell as conflicting poll results stoked worries whether the ruling Conservatives could lose seats in next week's UK general election.MSCI's Global equity index .MIWD00000PUS, which tracks 45 stock markets, dipped 0.1 percent on Wednesday, paring its month-to-date gain to 1.8 percent. The index booked seven months of increases, which would be its longest monthly winning streak in over a decade.The diminished appeal of stocks on Wednesday underpinned safe-haven bids for gold and low-risk U.S