8078561: Error message should be generated once when -source 6 is specified
Summary: Code to avoid duplicated errors about features not supported in the current source level moved to Log
Reviewed-by: jjg
SynthName2.java:33:9: compiler.err.synthetic.name.conflict: val$zzz, InnClass
SynthName2.java:34:17: compiler.err.synthetic.name.conflict: val$prm1, InnClass
SynthName2.java:35:17: compiler.err.synthetic.name.conflict: val$zzz, InnClass
3 errors