[deps] Updated eclipse deps to 3.9 tree. This also enables testing java7 features on ecj.

[Log] updated naming for @Log (topic= instead of mchmulder's 'value').

test/transform/resource/before/LoggerXSlf4j.java

@@ -8,6 +8,6 @@ class LoggerXSlf4j {
 class LoggerXSlf4jWithImport {
 }
 
-@XSlf4j("DifferentName")
+@XSlf4j(topic="DifferentName")
 class LoggerXSlf4jWithDifferentName {
 }