Use unversioned luac for broader compatability

Author: pintsized

util/lua-releng

@@ -40,7 +40,7 @@ for my $file (map glob, qw{ *.lua lib/*.lua lib/*/*.lua lib/*/*/*.lua lib/*/*/*/
     close $in;
 
     #print "Checking use of Lua global variables in file $file ...\n";
-    system("luac5.1 -p -l $file | grep ETGLOBAL | grep -vE '(require|type|tostring|error|ngx|ndk|jit|setmetatable|getmetatable|string|table|io|os|print|tonumber|math|pcall|xpcall|unpack|pairs|ipairs|assert|module|package|coroutine|[gs]etfenv|next|select|rawset|rawget|debug)\$'");
+    system("luac -p -l $file | grep ETGLOBAL | grep -vE '(require|type|tostring|error|ngx|ndk|jit|setmetatable|getmetatable|string|table|io|os|print|tonumber|math|pcall|xpcall|unpack|pairs|ipairs|assert|module|package|coroutine|[gs]etfenv|next|select|rawset|rawget|debug)\$'");
     #file_contains($file, "attempt to write to undeclared variable");
     system("grep -H -n -E --color '.{120}' $file");
 }