merge revision(s) 36151: [Backport #7746]

	* missing/setproctitle.c (environ): use (*_NSGetEnviron()) instead of
	  environ on Darwin for namespace cleanness, same as [ruby-core:00537].
	  [ruby-core:45615] [Bug #6576]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@39091 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 37174: [Backport #7754]

	* file.c (realpath_rec): prevent link from GC while link_names refers
	  the content.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@39092 b2dd03c8-39d4-4d8f-98ff-823fe69b080e