Kernel#inspect: improve consistency and do not call #to_s.
object.c (rb_obj_inspect): Kernel#inspect: do not call #to_s. A class
can now benefit from the nice default #inspect even if it defines #to_s.
Also, there is no more unexpected change in #inspect result.
NEWS: Add note about the change.
bignum.c, io.c, numeric.c, object.c, proc.c, vm.c (Init_*):
Adapt internal structures (by aliasing #inspect to #to_s) so they
don't rely on the removed behavior (#inspect calling overridden #to_s).
test/ruby/test_object.rb (test_inspect): add tests for Kernel#inspect.
lib/pp.rb (class PP): do not call #to_s anymore, as #inspect
no more does (mame).
test/test_pp.rb (class PPInspectTest): remove related assertion (mame). [ruby-core:43238][Feature #6130]
test/drb/drbtest.rb (DRbCore#teardown, DRbAry#teardown):
adapt DRb tests with the new change (shirosaki). [ruby-core:47182][Bug #6866]
Kernel#inspect: improve consistency and do not call #to_s.
can now benefit from the nice default #inspect even if it defines #to_s.
Also, there is no more unexpected change in #inspect result.
Adapt internal structures (by aliasing #inspect to #to_s) so they
don't rely on the removed behavior (#inspect calling overridden #to_s).
no more does (mame).
[ruby-core:43238][Feature #6130]
adapt DRb tests with the new change (shirosaki).
[ruby-core:47182][Bug #6866]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36709 b2dd03c8-39d4-4d8f-98ff-823fe69b080e