make stty a dependency with socat

helpers/common.sh

@@ -17,9 +17,15 @@ ESSENTIAL_SYSTEM_SPECIFIC=(
 	xargs
 )
 NONESSENTIAL=(
+	# recall listing selectors
 	iselect
 	vipe
+
+	# pseudo-terminal so paging/colors more likely
+	# to work same as when command is run
+	# without capture
 	socat
+	stty
 )
 
 get_subprog () {