Merge pull request #431 from st0012/silent-context-initialization

Silent the noise created when building Context in tests

Author: peterzhu2118

test/irb/test_ruby_lex.rb

@@ -721,6 +721,7 @@ def build_context(local_variables = nil)
         end
       end
 
+      IRB.conf[:VERBOSE] = false
       IRB::Context.new(nil, workspace)
     end
   end