log msg added when IOExc happens on execute()

src/eu/telecom_bretagne/praxis/common/SystemExecution.java

@@ -6,6 +6,7 @@ import java.io.Writer;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.StringTokenizer;
+import java.util.logging.Level;
 
 /**
  * Allows the execution of an external process, the specification of its standard input and the retrieval of the
@@ -293,7 +294,7 @@ public class SystemExecution
 		}
 		catch (IOException e)
 		{
-			// TODO fill in err. status
+			Log.log.log(Level.WARNING, "exec() throw IOException", e);
 			return -1;
 		}
 		Log.log.finest("Process started, now process.waitFor()");