Fixed some compiling warnings of camel-scala

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1460258 13f79535-47bb-0310-9956-ffa450edef68
CAMEL-6182 Merged the converters into camel-scala from camel-scala-extra

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1460259 13f79535-47bb-0310-9956-ffa450edef68