Item9084: Add configuration checker for invalid / stale Plugin modules

There have been a few difficult to diagnose issues caused by duplicate Extensions installed in TWiki and Foswiki lib path.

Add a Checker that validates the plugin modules.

• Added checker for PluginsOrder - There does not seem to be any way to add a checker for a section.
• Warn if TWikiCompatibilityPlugin is not first in list, or SpreadSheetPlugin is not 2nd in list
• Warn if any extension in the list is not enabled in the configuration.
• Warn if same plugin module is found in both TWiki and Foswiki lib path.
• Warn if TWiki plugin is configured in the {Module} parameter when Foswiki plugin is also installed.
• Warn if any Plugin is enabled in LocalSite.cfg but not found in the lib path.

-- GeorgeClark - 01 Jun 2010

MTempest reported that the checker doesn't find duplicate modules if Foswiki and TWiki are in different locations in the @INC list. I've tried to recreate several scenarios. MTempest, if you could validate that this finds the situation you encountered, thanks.

-- GeorgeClark - 19 Jul 2010

Thanks - this works great. It detects the situation I encountered just fine

-- MichaelTempest - 01 Aug 2010

Commenting is disabled while not logged in