CVS Update: xc (branch: trunk)

CVSROOT:	/home/x-cvs
Module name:	xc
Changes by:	[email protected].	06/02/19 07:54:07

Log message:
  A missing piece of ...
  
   217. A rework of the way extension support is built into servers to allow for
        servers with different sets of extensions in the same build.  This starts
        with an idea introduced in David Dawes's TinyX work, and extends it to
        also apply to the Xprt, Xnest, Xvfb, Xdmx and Xsun* servers.  The changes
        include:
        - Add, as a comment, a definition for what makes an extension pervasive.
        - TOGCUP is not a pervasive extension, but XSYNC, BIGREQS and XRES are.
        - Consolidate #define's for the Xv, XvMC and XRES extensions.
        - Flip, in favour of the majority case, MITSHM's default decision WRT
          whether or not a framebuffer stores pixmap data in the server's virtual
          address space.  MI is now independent of MITSHM and MITSHM is no longer
          a pervasive extension.
        - Add a DIX helper to determine whether Xinerama is active and use it
          instead of #ifdef'ed code in all loadable modules.  Re-implement, as
          a screen wrapper, Xinerama's PaintWindow*() hacks.  Move down to DIX
          Xinerama's only MI hook.  Both MI and loadable module objects are now
          independent of Xinerama.
        - Add more XCSECURITY-related DIX helpers.  Loadable module objects that
          provide their own extensions (e.g. apm) are now independent of the core
          binary's support for XCSECURITY.
        - Extend DBE to allow for front and back buffer revalidations (to be used
          in future changes to restore the only existing example of DBE hardware
          acceleration after converting the sunffb driver to fb, XAA & Render).
          This is the change that chronologically started all this.
        - Separate Xv and XvMC extensions more cleanly.
        - Move Xserver/*/tiny directories under Xserver/hw/tinyx.
        - Fix !PrintOnlyServer builds.
        - Clean up Xserver/Imakefile.
        - Remove remaining traces of Xdec* servers.
        - Fix parallel make bug in Xserver/Imakefile caused by unintentional
          symbol re-use.
        - Accomodate XWin more cleanly by not "skipping" over Xserver/hw.
        - Remove all extension stub code (no longer needed).
        `make World` is required to correctly build these changes.  In fact, I
        recommend staring from a fresh checkout.  These changes are bundled as
        one commit due to module versioning considerations.  (Marc La France)

Added files:
      xc/programs/Xserver/hw/xfree86/common/:
        xf86dbe.c