* wesnoth-mode.el (wesnoth-mode-version): 1.3.4a.
(wesnoth-element, wesnoth-element-closing, wesnoth-element-opening): Add
#ifdef preprossor macros when wesnoth-indent-preprocessor-bol is nil.
(wesnoth-active-parent-tag): Fixed a bug when immediately within a
preprocessor statement.
(wesnoth-indent): Add support for indenting elements relative to #ifdef when
wesnoth-indent-preprocessor-bol.
(wesnoth-determine-context): Fix a bug where too much was taken from the end
of the wesnoth-element regexp, which could result in malformed regexp. Add
support for getting the context of #ifdef preprocessor statements when
wesnoth-indent-preprocessor-bol is nil.