Put the xorg7-sis driver back into build.conf.example's
	modified:   ts/5.2/build.conf.example
	modified:   ts/5.2/conf/debuginit/build.conf.example
	modified:   ts/5.2/conf/default/build.conf.example
	modified:   ts/5.2/conf/devstation/build.conf.example
	modified:   ts/5.2/conf/freerdp/build.conf.example
	modified:   ts/5.2/conf/hwlister/build.conf.example
	modified:   ts/5.2/conf/icewm/build.conf.example
	modified:   ts/5.2/conf/installer/build.conf.example
	modified:   ts/5.2/conf/rdesktop/build.conf.example
	modified:   ts/5.2/conf/tiny/build.conf.example
	modified:   ts/5.2/conf/vmviewpcoip/build.conf.example
	modified:   ts/5.2/conf/xterm/build.conf.example