add glenda to group sys
 [rsc] --rw-rw-r-- M 1138436 rsc sys 17266 Feb 16 12:23 sys/src/cmd/fossil/9user.c
	/n/sourcesdump/2006/0216/plan9/sys/src/cmd/fossil/9user.c:43,49 - 
	/n/sourcesdump/2006/0217/plan9/sys/src/cmd/fossil/9user.c:43,49
	  	"adm:adm:adm:sys\n"
	  	"none:none::\n"
	  	"noworld:noworld::\n"
	- 	"sys:sys::\n"
	+ 	"sys:sys::glenda\n"
	  	"glenda:glenda:glenda:\n"
	  };