plug-ins are now dynamically loaded

docs/changelog/6.x.x.txt

@@ -3,6 +3,10 @@
  - Added a --history option to upgrade.pl that displays the upgrade history
    for each site.
  - Fixed a typo in User.pm
+ - All plugins are now dynamically loaded. This provides a performance gain of
+   over 100% in CGI mode, 10% in mod_perl mode, and less memory usage in
+   mod_perl mode.
+
 
 
 6.0.3

docs/gotcha.txt

@@ -8,6 +8,11 @@ versions. Be sure to heed the warnings contained herein as they will
 save you many hours of grief.
 
 
+6.1.0
+--------------------------------------------------------------------
+ * See docs/migration.txt for changes in plug-in coding.
+
+
 6.0.2
 --------------------------------------------------------------------
  * You need to add all of your site aliases to the sitename variable

docs/migration.txt

@@ -103,5 +103,13 @@ way, including the constructor. We removed depricated parameters from the method
 which will cause pagination not to function in items that have not been updated. 
 
 
+5.4 Dynamic Plug-in Loading
+
+In 6.1 plug-ins (Wobjects, Macros, and Auth) are all dynamically loaded. They
+used to be statically loaded at session open time. If you are writing
+something that uses a macro, wobject, or auth module outside of the usual
+mechanisms that call those plug-ins, then you'll need to write a piece of code
+to load the plug-in at use time.
+