Use ‘eq’ instead of ‘equal’ for symbols

Use ‘eq’ instead of ‘equal’ for symbols

* lisp/ob-C.el (org-babel-C-val-to-C-type):
* lisp/ob-core.el (org-babel-get-colnames):
(org-babel-disassemble-tables):
* lisp/ob-lua.el (org-babel-lua-var-to-lua):
(org-babel-lua-table-or-string):
* lisp/ob-python.el (org-babel-python-var-to-python):
(org-babel-python-table-or-string):
* lisp/ob-ruby.el (org-babel-ruby-var-to-ruby):
(org-babel-ruby-table-or-string):
* lisp/ob-shell.el (org-babel-sh-var-to-string):
* lisp/ob-sqlite.el (org-babel-sqlite-table-or-scalar):
* lisp/org-agenda.el (org-agenda-prepare-window):
(org-compile-prefix-format):
* lisp/org-bibtex.el (org-bibtex-headline):
* lisp/org-capture.el (org-capture):
* lisp/org-colview.el (org-columns-next-allowed-value):
* lisp/org-mhe.el (org-mhe-store-link):
(org-mhe-get-message-real-folder):
(org-mhe-get-message-folder):
(org-mhe-get-message-num):
(org-mhe-get-header):
(org-mhe-follow-link):
* lisp/org-table.el (org-define-lookup-function):
* lisp/org.el (format-spec):
* lisp/ox-odt.el (org-odt--translate-description-lists):
* lisp/ox-publish.el (org-publish-compare-directory-files):
Use `eq' instead of `equal' when comparing to symbols.
* lisp/org-timer.el (org-timer-set-mode-line):
* lisp/org-capture.el (org-capture-finalize):
Use `cl-case' instead of `(cond ((eq x 'foo) ...) ...)'.