* vm_insnhelper.c (vm_callee_setup_keyword_arg,
vm_callee_setup_arg_complex): consider a hash argument for keyword
only when the number of arguments is more than the expected
mandatory parameters. [ruby-core:53199] [ruby-trunk - Bug #8040]
* test/ruby/test_keyword.rb: update a test for above.
merge revision(s) 40992: [Backport #8040]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@41063 b2dd03c8-39d4-4d8f-98ff-823fe69b080e