USE_LISP_UNION_TYPE + USE_LSB_TAG cleanup (Bug#11604)

* alloc.c (make_number) [!defined make_number]:
Remove, as lisp.h always defines this now.
(mark_maybe_pointer): Simplify since USE_LSB_TAG is always defined now.
(roundup_size): Verify that it is a power of 2.
* data.c (Fmake_variable_buffer_local, Fmake_local_variable):
* ftfont.c (ftfont_driver): Use LISP_INITIALLY_ZERO.
* lisp.h (USE_LSB_TAG): Allow the builder to compile with
-DUSE_LSB_TAG=0, to override the automatically-selected default.
USE_LSB_TAG now is always defined to be either 0 or 1.
All uses changed.
(union Lisp_Object): Don't worry about WORDS_BIGENDIAN; the
code works fine either way, and efficiency is not a concern here,
as the union type is for debugging, not for production.
(LISP_MAKE_RVALUE, make_number) [USE_LISP_UNION_TYPE]:
Use an inline function on all platforms when using the union type,
since this is simpler and 'static inline' can be used portably
within Emacs now.
(LISP_INITIALLY_ZERO): New macro.
(XFASTINT, XSETFASTINT) [USE_LISP_UNION_TYPE]: Remove.
(XSET) [USE_LISP_UNION_TYPE]: Don't overparenthesize.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/xfont.c b/src/xfont.c
index bde76c0ba3c..cc06e27fe02 100644
--- a/src/xfont.c
+++ b/src/xfont.c
@@ -132,7 +132,7 @@ static int xfont_check (FRAME_PTR, struct font *);
 
 struct font_driver xfont_driver =
   {
-    0,                          /* Qx */
+    LISP_INITIALLY_ZERO,        /* Qx */
     0,                          /* case insensitive */
     xfont_get_cache,
     xfont_list,