Patch by Michael Mauger <mmaug@yahoo.com>

Patch by Michael Mauger  <mmaug@yahoo.com>

Version 1.8.0 of sql-mode.

Simplify selection of SQL products to define highlighting and
interactive mode.  Includes detailed instructions on adding
support for new products.

* sql.el (sql-product): New variable.  Identifies SQL product for
use in highlighting and interactive mode.
(sql-interactive-product): New variable.  SQL product for
sql-interactive-mode.
(sql-product-support): New variable.  Specifies product-specific
parameters to drive highlighting and interactive mode.
(sql-imenu-generic-expression): Add more object types.
(sql-sqlite-options): Correct comment.
(sql-ms-program): Use "osql" rather than "isql".
(sql-prompt-regexp, sql-prompt-length): Update comment.
(sql-mode-menu): Add "Start SQLi session" entry.  Replace
Highlighting submenu with Product menu.  Fix Send Region entry.
(sql-mode-abbrev-table): Add abbreviations.  Support of
SYSTEM-FLAG on define-abbrev.  Support was removed with last
check-in; it now handles older Emacsen without the SYSTEM-FLAG.
(sql-mode-font-lock-object-name): Add font-lock pattern for object
names.
(sql-mode-ansi-font-lock-keywords): Set as default value.
(sql-mode-oracle-font-lock-keywords): Set as default value.
Support Oracle 9i keywords.
(sql-mode-postgres-font-lock-keywords): Set as default value.
(sql-mode-linter-font-lock-keywords): Set as default value.
(sql-mode-ms-font-lock-keywords): New variable.  Support Microsoft
SQLServer 2000.
(sql-mode-sybase-font-lock-keywords)
(sql-mode-interbase-font-lock-keywords)
(sql-mode-sqlite-font-lock-keywords)
(sql-mode-strong-font-lock-keywords)
(sql-mode-mysql-font-lock-keywords)
(sql-mode-db2-font-lock-keywords): New variables.  Default to ANSI
keywords.
(sql-mode-font-lock-defaults): Update comment.
(sql-product-feature): New function.  Returns feature associated
with a product from `sql-product-support' alist.
(sql-product-font-lock): New function.  Set font-lock support
based on `sql-product'.
(sql-add-product-keywords): New function.  Add font-lock rules to
product-specific keyword variables.
(sql-set-product): New function.  Set `sql-product' and apply
appropriate font-lock highlighting.
(sql-highlight-product): New function.  Set font-lock support
based on a product.  Also set mode name to include product name.
(sql-highlight-ansi-keywords, sql-highlight-oracle-keywords)
(sql-highlight-postgres-keywords, sql-highlight-linter-keywords):
Use `sql-set-product'.
(sql-highlight-ms-keywords)
(sql-highlight-sybase-keywords)
(sql-highlight-interbase-keywords)
(sql-highlight-strong-keywords)
(sql-highlight-mysql-keywords)
(sql-highlight-sqlite-keywords)
(sql-highlight-db2-keywords): New functions.  Use
`sql-set-product'.
(sql-get-login): Prompt in the same order as the tokens.
(sql-mode): Uses `sql-product-highlight' and
`sql-product-font-lock'.
(sql-product-interactive): New function.  Common portions of
product-specific interactive mode wrappers.
(sql-interactive-mode): Rewritten to use product features.
(sql-oracle, sql-sybase, sql-informix, sql-sqlite, sql-mysql)
(sql-solid, sql-ingres, sql-ms, sql-postgres, sql-interbase)
(sql-db2, sql-linter): Use `sql-product-interactive'.
(sql-connect-oracle, sql-connect-sybase, sql-connect-informix)
(sql-connect-sqlite, sql-connect-mysql, sql-connect-solid)
(sql-connect-ingres, sql-connect-postgres)
(sql-connect-interbase, sql-connect-db2, sql-connect-linter): New
functions.  Format command line parameters and invoke comint on
the appropriate interpreter.  Code was in the corresponding
`sql-xyz' function before.
(sql-connect-ms): New function.  Support -E argument to use
operating system credentials for authentication.