[SHELL32]

[SHELL32]
- CControlPanelFolder: Factor out CCPLItemMenu class. Use it if the user selected a cpl item and use the default context menu otherwise.
- CControlPanelFolder: Use ExpandEnvironmentStrings when enumerating applets from the registry. Patch by Christoph.
- CCPLItemMenu: Call Control_RunDLLA directly so as to be able to run control panel applets that don't use the cpl extension.
CORE-7755 CORE-9466

svn path=/trunk/; revision=67016