the transformation is not at all erroneous, it's entirely intentional.  Xarch.h
safeguards by checking if X_BYTE_ORDER is already defined, and doesn't redefine
if so.  dix-config.h should always be included by any other header, so which
file is it that includes dix-config.h after Xarch.h?

This is the sequence of warnings when compiling miext/rootless/safeAlpha/safeAlphaWindow.c:

In file included from ./../rootlessCommon.h:32,
                 from safeAlphaWindow.c:37:
../../../include/dix-config.h:415:1: warning: "X_BYTE_ORDER" redefined
In file included from ../../../include/pixmapstr.h:51,
                 from ../../../fb/fb.h:31,
                 from safeAlphaWindow.c:35:
/usr/X11R7/include/X11/Xarch.h:120:1: warning: this is the location of the previous definition


The original C file produces two other errors:

In file included from safeAlphaWindow.c:37:
./../rootlessCommon.h:99: error: parse error before 'SetShapeProcPtr'
./../rootlessCommon.h:99: warning: no semicolon at end of struct or union
./../rootlessCommon.h:111: error: parse error before ':' token
./../rootlessCommon.h:112: error: parse error before ':' token
./../rootlessCommon.h:113: error: parse error before ':' token
./../rootlessCommon.h:114: warning: type defaults to 'int' in declaration of 'RootlessScreenRec'
./../rootlessCommon.h:114: warning: type defaults to 'int' in declaration of 'RootlessScreenPtr'
./../rootlessCommon.h:114: warning: data definition has no type or storage class

When I add a patch from another Mac OS X user

34a35,38
> 
> #ifdef HAVE_DIX_CONFIG_H
> #include <dix-config.h>
> #endif

it seems to compile fine ... He recommends some more of these simple patches to files in the miext tree.

Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.

Does not appear again.