ob: Remove indentation information from Babel properties

ob: Remove indentation information from Babel properties

* lisp/ob-core.el (org-babel-get-src-block-info): Do not return block
  indentation.
(org-babel-parse-src-block-match): Ignore block indentation.
(org-babel-demarcate-block): Find appropriate indentation instead of
using the one from the original block.
(org-babel-where-is-src-block-result): Change signature.  Indent
according to context instead of relying on indentation from original
block.
(org-babel-insert-result): Change signature.
(org-babel-check-confirm-evaluate):
(org-babel-execute-src-block):
(org-babel-insert-header-arg): Apply change to src-block info.

* lisp/ob-exp.el (org-babel-exp-process-buffer): Apply change to
  src-block info.

* lisp/ob-lob.el (org-babel-lob-get-info): Do not return indentation.
(org-babel-lob-execute): Apply change to lob-info.

Indentation from source block is often wrong at the block and its
results may not be in the same context.