ruby 1.8.6 (2010-09-02 patchlevel 420) [powerpc-darwin9.8.0] [1.8.6,pth] (ppc-mac-mini) 155W 3[BUG] 2[SIGABRT] failed(test.rb) failed(method-list) failed(make)

COMMIT [NARUSE, Yui] Avoid spec collision between language/for and core/module.