MIDEAST STOCKS-CIB's Q2 earnings aid Egypt, blue chips weigh on Gulf

* CIB carries Egypt's index over 8,000 points * Saudi's SABIC drops 3.8 pct on lower Q2 profit * Index closes at 3-1/2 month low * Abu Dhabi slips after bank earnings * Dubai's Aramex up on strong Q2 By Celine Aswad DUBAI, July 28 (Reuters) - Egypt's largest bank helped carry the stock market higher on Thursday after it posted strong quarterly earnings, while weak results from blue chips weighed on some Gulf bourses. The Cairo index rose 1.5 percent to 8,031 points, climbing above major technica