add Cobertura plugin sources sent to me by Will Gwaltney in May.
PR: MOJO-127
Submitted by: Joakim Erdfelt
Initial cobertura plugin
Increase version to 2.0-SNAPSHOT and minor doc fix
MOJO-146 Fix for large dependency counts under win32 / Updated Documentation / Added CoberturaCleanMojo / Corrected Report Error With non-instrumented classes / Added custom lifecycle for Report generation.
o adding forkMode = once
o addition to the lifecycle so that we specify the goal in an execution which
  contains configuration items for the mojo to be executed. we need something a little
  more elegant but we'll JIRA that. this will work for now.
Upgrade to cobertura 1.7
don't generate without sources
set prereq
updated poms to version 5
Fix scm url
created sandbox mojo parent. Updated poms to use new parent.
mojo-sandbox parent should also be snapshot rev since everything else is.
clean up dependencies
PR: MOJO-271
Cobertura runs tests twice, causing surefire to break
Add TODO note to explain Cobertura plugin limitation.
PR: MOJO-226
Add pseudo-dependency in order to remove 3rd party dependencies in test classpath
[MOJO-271] revert rev #1442, this causes all percentages to be 0%
[MOJO-271] avoid running tests twice