* lib/rexml/document.rb: move entity_expansion_limit accessor to ...
* lib/rexml/rexml.rb: ... here to make rexml/text independent from
  REXML::Document. It causes circular require.
* lib/rexml/document.rb (REXML::Document.entity_expansion_limit):
  deprecated.
* lib/rexml/document.rb (REXML::Document.entity_expansion_limit=):
  deprecated.
* lib/rexml/text.rb: add missing require "rexml/rexml" for
  REXML.entity_expansion_limit.
  Reported by Robert Ulejczyk. Thanks!!! [ruby-core:52895] [Bug #7961]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/rexml/document.rb: move entity_expansion_limit accessor to ...
* lib/rexml/rexml.rb: ... here for consistency.
* lib/rexml/document.rb (REXML::Document.entity_expansion_limit):
  deprecated.
* lib/rexml/document.rb (REXML::Document.entity_expansion_limit=):
  deprecated.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e