merge revision(s) 37177: [Backport #7157]
* ruby.c (rb_f_sub, rb_f_gsub): pass the given block. [ruby-core:47967] [Bug #7157]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@37205 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 37177: [Backport #7157]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@37205 b2dd03c8-39d4-4d8f-98ff-823fe69b080e