For education and discussion only. Not for commercial use. LISBON, Feb 19 (IPS) - Several transnational corporations that opened plants in Portugal with European Union (EU) subsidies have recently closed up shop to move to countries offering more advantageous conditions, triggering a heated debate on the use of the bloc's development funds. Trade unionists, economists and local politicians have issued warnings of the need to prevent a repeat of episodes like the closure of factories by German and British companies that simply decided to ''pack up their tent, like in some Bedouin camp, in search of cheaper labour,'' in the...