LONDON (Reuters) - World stock markets enjoyed a second day of sharp gains on Tuesday as signs of progress against the coronavirus in both Europe and the United States and more liberal helpings of stimulus kept investors charging back in.There was an added boost from commodity markets as oil climbed nearly 3% on supply cut hopes, while currency markets also came alive as a tumbling dollar saw the euro race out of a six-session rut of falls. [/FRX][O/R]Equities was were the main action was..