Same for field (still adapted from Matt Benson github fork), doing type checking lazily in getType since normally it is useless

git-svn-id: https://svn.apache.org/repos/asf/geronimo/xbean/trunk@1596399 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release xbean-3.18

git-svn-id: https://svn.apache.org/repos/asf/geronimo/xbean/trunk@1596406 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/geronimo/xbean/trunk@1596408 13f79535-47bb-0310-9956-ffa450edef68