* Global environment weak, Gulf's Q2 earnings stimulus fades * Emaar, Arabtec, DFM come under heavy profit-taking * Foreign investment law fails to boost Qatar * Tur**ver drops in Saudi Arabia * Egypt's Global Telecom hit by wider Q2 loss By Andrew Torchia DUBAI, Aug 6 (Reuters) - Most Gulf stock markets consolidated on Wednesday because of a weak global environment and a lack of fresh, positive news as the second-quarter earnings reporting season drew to a close in many countries. Profit-taking in property firms and banks pulled down Dubai and Abu Dhabi.