Revert to 1.9.3 ruby_version

Author: adambeynon

opal/opal.rb

@@ -47,6 +47,6 @@
 
 RUBY_PLATFORM       = 'opal'
 RUBY_ENGINE         = 'opal'
-RUBY_VERSION        = '2.0.0'
+RUBY_VERSION        = '1.9.3'
 RUBY_ENGINE_VERSION = '0.5.3'
 RUBY_RELEASE_DATE   = '2013-11-20'

spec/corelib/language/predefined_spec.rb

@@ -71,7 +71,7 @@
 
   it "includes RUBY_VERSION" do
     Object.const_defined?(:RUBY_VERSION).should == true
-    RUBY_VERSION.should == "2.0.0"
+    RUBY_VERSION.should == "1.9.3"
   end
 
   it "includes RUBY_RELEASE_DATE" do

spec/filters/bugs/string.rb

@@ -36,4 +36,7 @@
   fails "String#to_sym special cases +(binary) and -(binary)"
 
   fails "String#upcase is locale insensitive (only replaces a-z)"
+
+  # 1.9.3 => 2.0
+  fails "String#end_with? ignores arguments not convertible to string"
 end

spec/filters/unsupported/enumerator.rb

@@ -10,4 +10,7 @@
   fails "Enumerator#rewind does nothing if the object doesn't have a #rewind method"
   fails "Enumerator#rewind works with peek to reset the position"
   fails "Enumerator#rewind calls the enclosed object's rewind method if one exists"
+
+  # 1.9.3 => 2.0
+  fails "Enumerator.new ignores block if arg given"
 end