* Yen hits multi-months low against dollar, euro. * Tokyo's Nikkei rallies to 6-month high on weak yen. * MSCI Asia ex-Japan rises; eyes on China PMI. The yen fell to a 7-1/2-month low versus the dollar on Thursday, lifting Japan's Nikkei share average to a six-month high, on mounting expectations of aggressive policy action under a likely new government. Asian stocks outside Japan were also in demand and investors will focus on HSBC China flash PMI for November due later on Thursday to see whether a low point for China, the world's second largest economy, is over. The Japanese currency fell to 82.535 yen to the ... (full story)