variables.
(xesam-mode): Extend docstring. Initialize `xesam-notify-function'.
(xesam-refresh-entry): Use `xesam-notify-function' if set. Remove
Debbugs specific code; it shall be enabled via `xesam-mode-hooks'.
(xesam-new-search): Initialize `xesam-vendor'.
(xesam-mode-line, xesam-highlight): New deffaces.
(xesam-objects): New local variable.
(xesam-search-engines): Fix error in field list.
(xesam-mode): Use `xesam-mode-line' instead of
`font-lock-type-face'. Apply `xesam-mode' to a temp buffer, for
proper initiatilzaion (why?).
(xesam-highlight-string, xesam-get-hits)
(xesam-kill-buffer-function): New defuns.
(xesam-refresh-entry): Move code to `xesam-get-hits'. Check
result of "hit.fields", it isn't a string only. Wrap an error of
the strigi search engine ("xesam:size" is returned as string).
Highlight search items.
(xesam-refresh-search-buffer): Make logic of counters more simple.
Prefetch next hits.
(xesam-signal-handler): Use `xesam-mode-line' instead of
`font-lock-type-face'.
(xesam-new-search): Add `xesam-kill-buffer-function' to
`kill-buffer-hook'.
identifiers.
(xesam-dbus-unique-names): New defvar.
(xesam-dbus-call-method): New defun. Replace all calls of
`dbus-call-method' by `xesam-dbus-call-method'.
(xesam-get-cached-property, xesam-set-cached-property): New
defuns.
(xesam-get-property, xesam-set-property, xesam-refresh-entry)
(xesam-new-search, xesam-search): Apply
`xesam-get-cached-property'.
(xesam-search-engines): Make it an association list. Take changed
layout into account in the corresponding function.
(xesam-delete-search-engine): Remove check for consistency of
`xesam-search-engines', not needed anymore.
(xesam-mode): Show XML query string only in the debug case.
(xesam-mode): Derive from `special-mode'. Extend `xesam-mode-map'
and `mode-line-position'.
(xesam-refresh-entry): Remove argument `hit-number'. Add debug
information to the widgets. Don't set `mode-line-position'.
(xesam-refresh-search-buffer): Correct hit number computing.
Don't set `mode-line-position'.
(xesam-new-search): Add debug information to the mode line.
