Add rulename to marker message, which is shown as a tooltip.

Fixes #84

Author: adangel

net.sourceforge.pmd.eclipse.plugin.test/src/main/java/net/sourceforge/pmd/eclipse/runtime/cmd/ReviewCmdTest.java

@@ -112,6 +112,8 @@ public void testReviewCmdBasic() throws CoreException {
         Assert.assertEquals(markers.get(sourceFile).size(), imarkers.size());
         for (IMarker marker : imarkers) {
             Assert.assertTrue(marker.isSubtypeOf(IMarker.PROBLEM));
+            Assert.assertTrue(marker.getAttribute(IMarker.MESSAGE, "")
+                    .startsWith(marker.getAttribute(PMDRuntimeConstants.KEY_MARKERATT_RULENAME, "missing rule name")));
         }
     }
 

net.sourceforge.pmd.eclipse.plugin/src/main/java/net/sourceforge/pmd/eclipse/runtime/cmd/BaseVisitor.java

@@ -629,7 +629,7 @@ private MarkerInfo2 getMarkerInfo(RuleViolation violation, String type) throws P
 
         MarkerInfo2 info = new MarkerInfo2(type, 7);
 
-        info.add(IMarker.MESSAGE, violation.getDescription());
+        info.add(IMarker.MESSAGE, rule.getName() + ": " + violation.getDescription());
         info.add(IMarker.LINE_NUMBER, violation.getBeginLine());
         info.add(PMDRuntimeConstants.KEY_MARKERATT_LINE2, violation.getEndLine());
         info.add(PMDRuntimeConstants.KEY_MARKERATT_RULENAME, rule.getName());