Be much more permissive with the output of the 'file' command.

GDB used to write a rather restricted set of sentences, but modern versions
are very chatty. The set of possible output lines can no longer anticipated
with reasonable effort. Therefore, accept everything after an initial line
that begins with "Reading symbols from" as success, and treat it as an
error if this line does not occur at the beginning of the output.

kdbg/gdbdriver.cpp

@@ -2216,33 +2216,33 @@ bool GdbDriver::parseChangeWD(const char* output, QString& message)
 
 bool GdbDriver::parseChangeExecutable(const char* output, QString& message)
 {
-    message = output;
-
     /*
-     * Lines starting with the following do not indicate errors:
-     *     Using host libthread_db
-     *     (no debugging symbols found)
+     * We expect the first line to begin with
+     *
      *     Reading symbols from
+     *
+     * to indicate that the target has been loaded successfully. If we see
+     * anything else, we treat it an error. If an error occurs while
+     * reading symbols, we ignore the situation under the assumption that
+     * GDB will just treat the program as if it had no symbols in the
+     * first place, but will otherwise respond normally.
      */
-    while (strncmp(output, "Reading symbols from", 20) == 0 ||
-	   strncmp(output, "done.", 5) == 0 ||
-	   strncmp(output, "Missing separate debuginfo", 26) == 0 ||
-	   strncmp(output, "Try: ", 5) == 0 ||
-	   strncmp(output, "Using host libthread_db", 23) == 0 ||
-	   strncmp(output, "(no debugging symbols found)", 28) == 0)
+    if (strncmp(output, "Reading symbols from", 20) == 0)
     {
-	// this line is good, go to the next one
+	// keep just the first line in the message
+	// otherwise, all lines of text would end up in the status bar
 	const char* end = strchr(output, '\n');
 	if (end == 0)
-	    output += strlen(output);
-	else
-	    output = end+1;
+	    end = output + strlen(output);
+	message = QString::fromLatin1(output, end - output);
+	return true;
+    }
+    else
+    {
+	// error: keep all text
+	message = output;
+	return false;
     }
-
-    /*
-     * If we've parsed all lines, there was no error.
-     */
-    return output[0] == '\0';
 }
 
 bool GdbDriver::parseCoreFile(const char* output)