Decide what to do with x11 extension switches in the ./configure file

    -no-xshape ......... Do not compile XShape support.
 *  -xshape ............ Compile XShape support.
                         Requires X11/extensions/shape.h.

    -no-xvideo ......... Do not compile XVideo support.
 *  -xvideo ............ Compile XVideo support.
                         Requires X11/extensions/Xv.h & Xvlib.h.

    -no-xsync .......... Do not compile XSync support.
 *  -xsync ............. Compile XSync support.
                         Requires X11/extensions/sync.h.

    -no-xinerama ....... Do not compile Xinerama (multihead) support.
 *  -xinerama .......... Compile Xinerama support.
                         Requires X11/extensions/Xinerama.h and libXinerama.
			 By default, Xinerama support will be compiled if
                         available and the shared libraries are dynamically
                         loaded at runtime.

    -no-xcursor ........ Do not compile Xcursor support.
 *  -xcursor ........... Compile Xcursor support.
                         Requires X11/Xcursor/Xcursor.h and libXcursor.
			 By default, Xcursor support will be compiled if
                         available and the shared libraries are dynamically
                         loaded at runtime.

    -no-xfixes ......... Do not compile Xfixes support.
 *  -xfixes ............ Compile Xfixes support.
                         Requires X11/extensions/Xfixes.h and libXfixes.
			 By default, Xfixes support will be compiled if
                         available and the shared libraries are dynamically
                         loaded at runtime.

    -no-xrandr ......... Do not compile Xrandr (resize and rotate) support.
 *  -xrandr ............ Compile Xrandr support.
                         Requires X11/extensions/Xrandr.h and libXrandr.

    -no-xrender ........ Do not compile Xrender support.
 *  -xrender ........... Compile Xrender support.
                         Requires X11/extensions/Xrender.h and libXrender.

    -no-mitshm ......... Do not compile MIT-SHM support.
 *  -mitshm ............ Compile MIT-SHM support.
                         Requires sys/ipc.h, sys/shm.h and X11/extensions/XShm.h

    -no-xinput ......... Do not compile Xinput support.
 *  -xinput ............ Compile Xinput support. This also enabled tablet support
                         which requires IRIX with wacom.h and libXi or
                         XFree86 with X11/extensions/XInput.h and libXi.

    -no-xkb ............ Do not compile XKB (X KeyBoard extension) support.
 *  -xkb ............... Compile XKB support.