* org-element.el (org-element-paragraph-separate): Use
new name `org-list-allow-alphabetical'.
* org-list.el (org-list-allow-alphabetical): Rename from
`org-alphabetical-lists'.
(org-list-empty-line-terminates-plain-lists): Rename from
`org-empty-line-terminates-plain-lists'.
(org-checkbox-hierarchical-statistics): Rename from
`org-hierarchical-checkbox-statistics'.
* org.texi (Plain lists, Checkboxes): Use non-obsolete
variable names.
f373bca58b