org: begin_center in Emacs @HEAD

[T.V Raman]

The org info manual shows 
#+BEGIN_CENTER

as the way to introduce a block of centered text and that worked until
recently -- perhaps broke last weekend when the latest org was merged?

Now, the above fails and puts the #+BEGIN_CENTER into the exported
HTML.
Insert that tag using M-x org-insert-structure-template and it works,
the block is in lower case though which appears to be what org wants
now 
-- 

Thanks,

--Raman(I Search, I Find, I Misplace, I Research)
♉ Id: kg:/m/0285kf1  🦮

-- 

Thanks,

--Raman(I Search, I Find, I Misplace, I Research)
♉ Id: kg:/m/0285kf1  🦮