Fix predicates to return actual true/false values.

Author: marcandre

lib/rspec/core/example.rb

@@ -231,8 +231,13 @@ def example_group
         @example_group_class
       end
 
-      alias_method :pending?, :pending
-      alias_method :skipped?, :skip
+      def pending?
+        !!pending
+      end
+
+      def skipped?
+        !!skip
+      end
 
       # @api private
       # instance_execs the block passed to the constructor in the context of
@@ -577,7 +582,9 @@ class ExecutionResult
         #   this indicates whether or not it now passes.
         attr_accessor :pending_fixed
 
-        alias pending_fixed? pending_fixed
+        def pending_fixed?
+          !!pending_fixed
+        end
 
         # @return [Boolean] Indicates if the example was completely skipped
         #   (typically done via `:skip` metadata or the `skip` method). Skipped examples