renamed module __builtin__ to builtins
applied 2to3 conversion to iptest, test_bool
Merge pull request #43 from paweljasinski/i40

renamed module __builtin__ to builtins
removed print statement
Merge pull request #48 from paweljasinski/i47

removed print statement
manual corrections after 2to3
Merge pull request #45 from paweljasinski/i41

applied 2to3 conversion to iptest, test_bool