Fix travis script to use specified eclipse version and run a clean build
Fix travis script to use specified eclipse version and run a clean build

See comments on #302.

Signed-off-by: Andrey Loskutov <803317b480c9ad50fea7eb66904eec5abf3bca26@gmx.de>
sewe/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs,johnscancella/spotbugs,sewe/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,sewe/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,sewe/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs,spotbugs/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs