Pin rake to v10.* to work with Ruby 1.8.7

Author: badboy

redis.gemspec

@@ -39,6 +39,6 @@ Gem::Specification.new do |s|
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
 
-  s.add_development_dependency("rake")
+  s.add_development_dependency("rake", "<11.0.0")
   s.add_development_dependency("test-unit", "3.1.5")
 end