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 Wed Aug 22 16:57:04 2012  Nobuyoshi Nakada  <[email protected]>
 
 	* lib/mkmf.rb (configuration): extact least ruby headers list as
-	  ruby_headers.
+	  ruby_headers, so depend files can use default dependency
+	  explicitly.
 
 Wed Aug 22 15:27:50 2012  Koichi Sasada  <[email protected]>