[MNG-4133] Improve the error feedback for problems loading wagons from build extensions. Delay loading the actual wagons until they're needed, to prevent bringing down the whole build with an unloadable wagon that isn't going to be used.


git-svn-id: https://svn.apache.org/repos/asf/maven/components/branches/maven-2.2.x@770338 13f79535-47bb-0310-9956-ffa450edef68
1 file changed