(sql-interactive-mode-map): Use `kbd' in calls to

(sql-interactive-mode-map): Use `kbd' in calls to
`define-key'; instead of checking `(emacs-version)' check for
`set-keymap-parent' and `set-keymap-name' directly.  Add entries
for `;' and `o' which might be electric.

(sql-electric-stuff): New user option.
(sql-magic-go): New function which uses `sql-electric-stuff'.
(sql-magic-semicolon): New function which uses
`sql-electric-stuff'.

(sql-accumulate-and-indent): Insert newline if `comint-accumulate'
is not fboundp.

(sql-oracle-options): New variable.
(sql-oracle): Use it.

(sql-imenu-generic-expression): Doc change.
(sql-find-sqli-buffer): Make sure the default-value of sql-buffer
is used.

(sql-informix): Added command line parameter "-" to force
sql-informix-program to use stdout.