A bunch of more changes for the raw reader

* send end_of_data event for all kind of streams
* send process_finished event containing exit code of child process for executed programs
* move raw-tests to separate directory
* expose name of input stream to readers
* better handling of some error cases in raw reader
* new force_kill option for raw reader which SIGKILLs progesses on exit

The ordering of events how they arrive in the main loop is a bit peculiar at the moment.
The process_finished event arrives in scriptland before all of the other events, even though
it should be sent last. I have not yet fully figured that out.

testing/btest/scripts/base/frameworks/input/raw/stderr.bro

@@ -4,8 +4,6 @@
 
 redef exit_only_after_terminate = T;
 
-module A;
-
 type Val: record {
 	s: string;
 	is_stderr: bool;
@@ -16,7 +14,6 @@ global outfile: file;
 
 event line(description: Input::EventDescription, tpe: Input::Event, s: string, is_stderr: bool)
 	{
-	print outfile, description;
 	print outfile, tpe;
 	print outfile, s;
 	print outfile, is_stderr;
@@ -25,12 +22,25 @@ event line(description: Input::EventDescription, tpe: Input::Event, s: string, i
 	if ( try == 7 )
 		{
 		print outfile, "done";
-		close(outfile);
 		Input::remove("input");
-		terminate();
 		}
 	}
 
+event Input::end_of_data(name: string, source:string)
+	{
+	print outfile, "End of Data event";
+	print outfile, name;
+	terminate(); # due to the current design, end_of_data will be called after process_finshed and all line events.
+	# this could potentially change
+	}
+
+event InputRaw::process_finished(name: string, source:string, exit_code:count, signal_exit:bool)
+	{
+	print outfile, "Process finished event";
+	print outfile, name;
+	print outfile, exit_code;
+	}
+
 event bro_init()
 	{