MIDEAST STOCKS-Qatar, Egypt rise to multi-month highs; petchems support Saudi

* Qatar rises to nine-month high * Mid-cap shares support Abu Dhabi but most banks weak * Banking stocks pull Kuwait's bourse up * Saudi petrochemical sector gains for third session * Egypt at 13-month high as local and foreign funds buy By Celine Aswad DUBAI, Aug 8 (Reuters) - Stock markets in Qatar and Egypt closed at multi-month highs on Monday on the back of firm global bourses, while Saudi Arabia's stock market was supported by a recovery in oil prices. Qatar's index rose 1.2 percent to 10,