merges r21516 from trunk into ruby_1_9_1. * win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc, miniprelude.c, newline.c): copy only when $(srcdir) != pwd.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r21516 from trunk into ruby_1_9_1.
* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
miniprelude.c, newline.c): copy only when $(srcdir) != pwd.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e