Apply Gentoo patch to make Xinerama optional (probably requires autoreconf)

AC_SUBST(GIBLIB_CFLAGS)

dnl Check for Xinerama

LIBS="-L/usr/X11R6/lib $LIBS -lm -ljpeg"

AC_CHECK_LIB(Xext,XMissingExtension)

AC_CHECK_LIB(Xinerama,XineramaQueryScreens)

AC_SUBST(HAVE_XINERAMA)

AC_SUBST(XINERAMA_LIBS)

AC_ARG_ENABLE(xinerama,

	AC_HELP_STRING([--disable-xinerama],[disable Xinerama multi screen support]),

	[

	if test x"$enableval" = xyes; then

		with_xinerama="yes"

	else

		with_xinerama="no"

	fi

	],

	[with_xinerama="detect"]

)

if test x"$with_xinerama" != xno; then

	AC_CHECK_LIB(Xext,XMissingExtension,[

		AC_CHECK_LIB(Xinerama,XineramaQueryScreens,[

			AC_DEFINE(HAVE_LIBXINERAMA, [], [Enable Xinerama support])

			LIBS="$LIBS -lXext -lXinerama"

		])

	])

fi

AC_CHECK_LIB(jpeg, jpeg_destroy_decompress)

dnl AC_CHECK_FUNC(getopt_long,,[LIBOBJS="$LIBOBJS getopt.o getopt1.o"])

# A list of all the files in the current directory which can be regenerated

MAINTAINERCLEANFILES = Makefile.in				

LDFLAGS           = -L/usr/X11R6/lib -L/usr/local/lib -lz -lpng

INCLUDES          = -I/usr/X11R6/include $(X_CFLAGS) \

                    -I$(prefix)/include -I$(includedir) \

                    -I. -I$(top_srcdir)/src \