Add big warning in case of non-official dedx mode

Author: ddobrigk

Common/TableProducer/PID/pidTPCModule.h

@@ -230,6 +230,16 @@ class pidTPCModule
     // read in configurations from the task where it's used
     pidTPCopts = external_pidtpcopts;
 
+    if(pidTPCopts.useCorrecteddEdx.value){ 
+      LOGF(info, "***************************************************");
+      LOGF(info, " WARNING: YOU HAVE SWITCHED ON 'corrected dEdx!");
+      LOGF(info, " This mode is still in development and it is meant");
+      LOGF(info, " ONLY FOR EXPERTS at this time. Please switch ");
+      LOGF(info, " this option off UNLESS you are absolutely SURE");
+      LOGF(info, " of what you're doing! You've been warned!");
+      LOGF(info, "***************************************************");
+    }
+
     // initialize PID response
     response = new o2::pid::tpc::Response();