change "foo.h" to <X11/foo.h> for core headers, e.g. X.h, Xpoll.h;
change "foo.h", "extensions/foo.h" and "X11/foo.h" to
<X11/extensions/foo.h> for extension headers, e.g. Xv.h;
change "foo.[ch]" to <X11/Xtrans/foo.[ch]> for Xtrans files.
XScreenSaverSetAttributes() followed by XScreenSaverUnsetAttributes().
Caused by missing FreeResource() in XScreenSaverUnsetAttributes().
Removing unused DDC sections that caused misinterpretation of DDC data due
to a missing break statement in a switch.
Fixed typo: #if <-> #ifdef.