I have multiple plug-ins that I have put in a common area outside
eclipse, so that I can share my plug-ins via links between multiple
installs and also can disable the easier
CDT
GEF
InstantiationsGUIBuilder
jautodoc
maven
PDT
pydev
QuantumDB
subclipse
WST
In 3.3 these were "extension points" and the update process would
correctly put new updates into their correct external location
with 3.4, the update process ignored my custom locations and threw
everything into the eclipse plugins and features folders.