[jsettlers.main.swing] added ant build file to create a build of JSettlers.jar
[jsettlers.main.swing] added ant build file to create a build of JSettlers.jar

andreasb242/settlers-remake,andreasb242/settlers-remake,jsettlers/settlers-remake,Peter-Maximilian/settlers-remake,andreasb242/settlers-remake,phirschbeck/settlers-remake,jsettlers/settlers-remake,andreas-eberle/settlers-remake,jsettlers/settlers-remake,JKatzwinkel/settlers-remake,phirschbeck/settlers-remake,andreas-eberle/settlers-remake,andreas-eberle/settlers-remake,phirschbeck/settlers-remake