debug -> trace
Convert to jsr-330.
Allow beforeRun() and afterRun() to throw exceptions.
Merge pull request #741 from sonatype/jsr-330-abstract-task-support

Jsr 330 abstract task support
Merge remote-tracking branch 'origin/master' into nexus-5472-proxy404
Debug enhancement

Added toString mostly for debugging purposes
on ConfigurableRepository class, that is the
the parent of all repository implementations
in nexus, mostly for debug purposes.
Merge remote-tracking branch 'origin/master' into nexus-5472-proxy404
NEXUS-5472: Improved DEBUG logging