Activist hedge fund Marcato gains 10.4 pct in July

(Adds details on investments) By Svea Herbst-Bayliss BOSTON, Aug 2 (Reuters) - Marcato International, an activist hedge fund that mainly bets on U.S. equities, returned 10.4 percent in July, handily beating the broader stock market index's gain, when the fund made two new investments. Marcato last week said that it now owns 5.1 percent stakes in crane and heavy equipment manufacturer Terex Corp. and restaurant chain Buffalo Wild Wings Inc, sending the share price of both companies higher. Neithe