Fix JRUBY-4916: :"string" is significantly slower to generate the object than :string; don't create DSymbolNode in this case, since no evaluation is necessary.

Signed-off-by: Charles Oliver Nutter <headius@headius.com>

Signed-off-by: Charles Oliver Nutter <headius@headius.com>

Signed-off-by: Charles Oliver Nutter <headius@headius.com>

Signed-off-by: Vladimir Sizikov <vsizikov@gmail.com>

Since C doesn't support method overloading,
rb_ary_push() is for << and rb_ary_push_m() is for my_array.push.

The m most likely stands for 'method', as in push_method.

Signed-off-by: Vladimir Sizikov <vsizikov@gmail.com>

Author:    Rohit Arondekar <rohit.arondekar@gmail.com>

Fixes a bunch of spurious output when running AR tests.

[1.9] Kernel#singleton_methods returns a list of names of singleton methods in object and superclasses when passed true

This reverts commit 2e118e5b.

Revert "[1.9] remove String#module passing specs"

This reverts commit ea340d6b.

This reverts commit 2e118e5b.

Improve on the previous fix for JRUBY-4468, so that we can handle the cases where 'kill' sets errno to something other than ESRCH.

The error messages are a little off, however.