Closes #62 - DSE: Synthesis report is empty, but utilization.txt exists

* was in fact not implemented; fixed

src/main/scala/tapasco/activity/composers/VivadoComposer.scala

@@ -85,8 +85,8 @@ class VivadoComposer()(implicit cfg: Configuration, maxThreads: Option[Int]) ext
       if (files.tim.isEmpty) {
         throw new Exception("could not parse timing report: '%s'".format(files.timFile.toString))
       } else {
-        Composer.Result(checkTimingFailure(files), Some(files.bitFile.toString), files.log, None,
-          files.tim, files.pwr)
+        Composer.Result(checkTimingFailure(files), Some(files.bitFile.toString),
+          files.log, files.syn, files.tim, files.pwr)
       }
     }
   }
@@ -212,9 +212,11 @@ object VivadoComposer {
     lazy val runName: String = "%s with %s[F=%1.3f]".format(logformat(c), t, f)
     lazy val pwrFile: Path   = logFile.resolveSibling("power.txt")
     lazy val timFile: Path   = logFile.resolveSibling("timing.txt")
+    lazy val synFile: Path   = logFile.resolveSibling("utilization.txt")
     lazy val log             = ComposerLog(logFile)
     lazy val pwr             = PowerReport(pwrFile)
     lazy val tim             = TimingReport(timFile)
+    lazy val syn             = SynthesisReport(synFile)
   }
 
   /** custom ProcessIO: ignore everything. */