CodeSnip Old Code (SVN)

* Added two new event kinds: evBeforeCategoryDelete, called just before a category is deleted (freed) along with a reference to the category being freed and evAfterCategoryDelete which is triggered immediately after the category is freed.
* Modified TSnippets.InternalDeleteCategory to trigger the two new events before and after the category is freed.

Corrected bug in TRoutineList.IsEqual that was causing it to return opposite of required value in most cases.

* Added two new event kinds: evBeforeRoutineDelete, called just before a snippet is deleted (freed) along with a reference to the snippet being freed and evAfterRoutineDelete which is triggered immediately after the snippet is freed.
* Modified TSnippets.InternalDeleteRoutine to trigger the two new events before and after the snippet is freed.

Added new TCategoryInfo record that fully describes a category. Has Assign and Init methods.

* Added support for adding, renaming and deleting user defined categories. Required substantial changes to USnippets unit.
* Modified Snippet change event information object to provide information about category changes as well as snippet changes.

* Changed TSnippets.UpdateRoutine to ignore case when checking if a snippet's name has changed. Snippet names are not case sensitive.
* Modified TRoutineData.Assign to permit Extra property to be nil before calling the method.
* Removed unnecessary call to Init from TRoutineEditData.Assign.

Modified to use TObjectListEx from ULists unit instead of the VCL's TObjectList.

Corrected error in TSnippets.RemoveChangeEventHandler: code was *adding* the event handler rather than removing it.

Removed unused units from uses clauses.

Modified code that loads databases in line with changes to TSnippetsIOFactory.