Many many changes lumped in here ... not finished yet either.

Basically all the Database functions are in lib/datalib.php
and the web functions are all in lib/weblib.php, so
moodlelib.php is much thinner than it was.

Data functions have been extended ... most old calls will
still work, but now many more SQL commands can be performed
using the datalib functions rather than using SQL.  I'm
currently moving through the whole tree replacing SQL
calls or at least concentrating them in one section of
mod/xxx/lib.php

Still working on forums, quizzes, surveys, resources.

The tree is currently not full working ... some things are
half-completed ... will resume tomorrow.

admin/admin.php

@@ -125,14 +125,9 @@
 /// Print list of potential admins
 
     if ($search) {
-        $users = get_records_sql("SELECT * from user WHERE confirmed = 1 AND deleted = 0
-                                  AND (firstname LIKE '%$search%' OR 
-                                       lastname LIKE '%$search%' OR 
-                                       email LIKE '%$search%')
-                                  AND username <> 'guest' AND username <> 'changeme'");
+        $users = get_users_search($search);
     } else {
-        $users = get_records_sql("SELECT * from user WHERE confirmed = 1 AND deleted = 0
-                                  AND username <> 'guest' AND username <> 'changeme'");
+        $users = get_users_confirmed();
     }