l: better detect ls on Solaris 11

Solaris 11 ls was seen to support the --color option,
so use --version to determine if GNU or not.

Author: pixelb

scripts/l

@@ -61,7 +61,7 @@ else
 fi
 
 ls=ls #default to standard name
-{ ls --color -d . >/dev/null 2>&1; } ||
+{ ls --version >/dev/null 2>&1; } ||
 { gls --color -d . >/dev/null 2>&1 && ls=gls; } || NONGNU=1
 
 if [ "$color_when" ]; then