Struct#inspect does not produce the same output as MRI 2.2 #2142
Description
Couple failing MRI tests due to subtle changes in Struct#inspect:
PPTestModule::PPCycleTest#test_struct [/Users/headius/projects/jruby/test/mri/test_pp.rb:140]:
<"#<struct Struct::S :...>\n"> expected but was
<"#<struct Struct::S a=1, b=#<struct Struct::S:...>>\n">.
TestStruct::SubStruct#test_inspect [/Users/headius/projects/jruby/test/mri/ruby/test_struct.rb:121]:
Expected /^#<struct a=#<struct #<.*?>:...>>$/ to match "#<struct #<Class:0x2ccc231d> :...>".
That last failure is repeated through two other forms of the struct tests.