* lisp/progmodes/sql.el: Version 3.6

* lisp/progmodes/sql.el: Version 3.6

    (sql-login-params): Added :must-match for completition of
    `server' and `database' login parameters.
    (sql-sqlite-login-params, sql-postgres-login-params): Set
    :must-match to `confirm'.
    (sql-get-login-ext): Use :must-match value to control
    `read-file-name' or `completing-read'.
    (sql-connect): Added optional BUF-NAME parameter; Reworked
    connection variable processing; Pass buffer name to
    `sql-product-interactive'.
    (sql-product-interactive): Pass buffer name along.
    (sql-comint): Add optional BUF-NAME and calculate reasonable default.
    (sql-comint-oracle, sql-sybase-comint, sql-comint-informix)
    (sql-comint-sqlite, sql-comint-mysql, sql-comint-solid)
    (sql-comint-ingres, sql-comint-ms, sql-comint-postgres)
    (sql-comint-interbase, sql-comint-db2, sql-comint-linter)
    (sql-comint-vertica): Add optional BUF-NAME, pass to
    `sql-comint'.
    (sql-oracle--list-oracle-name): New function.
    (sql-oracle-list-all): Use it.
    (sql-oracle-completion-object): Enhanced.