LISBON (Reuters) - Angela Merkel flies to Lisbon on Monday, bringing her personal endorsement for a government battling to cut deficits under the terms of a German-backed bailout as Portugal suffers its deepest slump since the 1970s. "Portugal is meeting the commitments it has assumed very well," the chancellor told Portuguese broadcaster RTP on Sunday - a vote of confidence fellow conservative Prime Minister Pedro Passos Coelho will welcome, as he presses compatriots to take more pain and tries to distance Portugal from troubled Greece. ...