WRAPUP 3-Germany, France vow tighter policy coordination
* Sarkozy, Merkel agree to align tax, labour policy * Both reject Eurobond idea, increase in rescue fund * Euro eases, spreads edge up in thin end-year trading * ECB places ball in governments' court (Adds Trichet comments and market reaction) By Erik Kirschbaum and Emannuel Jarry FREIBURG, Germany, Dec 10 (Reuters) - Germany and France pledged on Friday to better align their tax and labour policies to foster convergence in the euro zone, but rejected calls for an increase in the bloc's rescue fund and joint sovereign bonds. Earlier on Friday, European central bankers had told euro zone governments they could not count on the ECB alone to solve a debt crisis which has forced bailouts of Greece and Ireland, and heaped pressure on countries like Portugal and Spain. At a news conference in the southwestern city of Freiburg, Chancellor Angela Merkel and French President Nicolas Sarkozy presented a united front ahead of a crucial summit next week where EU leaders are expect...