Revert "fix table concat bug "

This reverts commit c7ce9b7f02.

waf.lua

@@ -70,9 +70,6 @@ elseif PostCheck then
 			end
 			for key, val in pairs(args) do
 				if type(val) == "table" then
-					if type(val[1]) == "boolean" then
-						return
-					end
 					data=table.concat(val, ", ")
 				else
 					data=val