Changes throughout Moodle to remove any reserved words from the

Moodle tables.

ie user -> userid in many tables, plus in user_students
   start -> starttime and end -> endtime

I've just done all this as carefully as I could ... I don't think
I missed anything but it's pretty intensive work and I'd be fooling myself
if I didn't think I'd missed a couple.

Note that this version should pretty much be able to bootstrap itself
using PostgreSQL now ... but this is untested

mod/journal/view.php

@@ -81,7 +81,7 @@
         }
 
 
-        if ($entry = get_record("journal_entries", "user", $USER->id, "journal", $journal->id)) {
+        if ($entry = get_record("journal_entries", "userid", $USER->id, "journal", $journal->id)) {
 
             if (empty($entry->text)) {
                 echo "<P ALIGN=center><B>".get_string("blankentry","journal")."</B></P>";