merge revision(s) r43440:

	* struct.c (new_struct): fix warning message, class name and encoding.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r44042,44045:

	* test/ruby/test_struct.rb: Add regression test for question marks and
	  bangs in struct members. [Closes GH-468]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e