* lisp/ob-J.el (org-babel-J-interleave-echos): Change '' to ','.
(org-babel-J-interleave-echos-except-functions): Improve regexp
and change '' to ','.
(org-babel-J-strip-whitespace): Change '' to ','.
(obj-get-string-alignment): New function.
(org-babel-J-print-block): Accomodate left- and right-aligned tables.
(obj-match-second-space): Rename.
(obj-match-second-space-left): Renamed from `obj-match-second-space'.
(obj-match-second-space-right): New function.