Refactor the settings of $docdir This is a completely noop change for this project, since before this commit nothing was using $docdir nor PROGRAM_TARNAME. Setting the fourth parameter of AC_INIT() makes it set PROGRAM_TARNAME, which then used as the last path component of the default docdir, effectively making $docdir be the same as the previous $BASE_DIR/$DOC_MODULE. Signed-off-by: Mattia Rizzolo <mattia@mapreri.org>