merge revision(s) 45365: [Backport #9656]

	dl/extconf.rb: check for -fno-defer-pop option

	* ext/dl/extconf.rb: check for -fno-defer-pop option, since clang
  5.1 no longer support -fno-defer-pop option.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@45751 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 45364,45395,45396,45403,45406: [Backport #9652]

	* time.c (time_mload): freeze and preserve marshal-loaded time zone

	* test/ruby/test_time.rb: add test for GC on loaded object
	  [Bug #9652]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@45752 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 45471: [Backport #9688]

	* win32/win32.c (rb_w32_accept, open_ifs_socket, socketpair_internal):
	  reset inherit flag of socket to avoid unintentional inheritance of
	  socket.  note that the return value of SetHandleInformation() is not
	  verified intentionally because old Windows may return an error.
	  [Bug #9688] [ruby-core:61754]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@45753 b2dd03c8-39d4-4d8f-98ff-823fe69b080e