small changes

bin/epm-changelog

@@ -96,7 +96,7 @@ __epm_changelog_unlocal_names()
 			docmd equery changes -f $1 | less
 			;;
 		*)
-			fatal "Have no suitable command for $PMTYPE"
+			fatal "Have no suitable command for $PMTYPE. Try install the package firstly."
 			;;
 	esac
 

bin/epm-site

@@ -59,6 +59,7 @@ query_package_url()
 
 	case $PMTYPE in
 		*-rpm)
+			# TODO: for binary packages?
 			query_package_field URL "$1" || __query_package_hl_url "$1"
 			#LANG=C epm info "$1"
 			return