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+Sat Aug  7 14:08:44 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* lib/mkmf.rb: change instance variable to global.
+
 Sat Aug  7 13:59:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/pathname/pathname.c (path_sub_ext): don't clobber shared string.