merge revision(s) 41342,41359,41361: [Backport #8341]

	test/ruby/test_proc.rb: tests for [Bug #8341]
	* include/ruby/intern.h, proc.c (rb_method_call_with_block):
	  new function to invoke a Method object with a block passed
	  as an argument.

	* proc.c (bmcall): use the above function to avoid a block sharing.
	  [ruby-core:54626] [Bug #8341]

	* test/ruby/test_proc.rb (TestProc#test_block_persist_between_calls):
	  run related tests.

	* test/ruby/test_proc.rb (TestProc#test_block_given_method_to_proc):
	  run test for r41359.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@41650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 41347: [Backport #8319]

	* ext/tk/extconf.rb: support s390x (Thanks to bkabrda) [ruby-trunk - Bug #5465]
	* ext/tk/extconf.rb: apply [Backport87 - Backport #5048]
	* ext/tk/lib/tk/canvas.rb, ext/tk/sample/demos-{en,jp}/{tree.rb,widget}: fix bug (Thanks to zzak) [ruby-trunk - Bug #8319]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@41651 b2dd03c8-39d4-4d8f-98ff-823fe69b080e