Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/language/execution_spec.rb

@@ -0,0 +1,15 @@
+require File.expand_path('../../spec_helper', __FILE__)
+
+describe "``" do
+  it "returns the output of the executed sub-process" do
+    ip = 'world'
+    `echo disc #{ip}`.should == "disc world\n"
+  end
+end
+
+describe "%x" do
+  it "is the same as ``" do
+    ip = 'world'
+    %x(echo disc #{ip}).should == "disc world\n"
+  end
+end