Fix Long Numeric Integer representation for Python 3

[Levak]

Before Python 3, long integers were input with an L suffix. Since Python 3, all integers are 64-bit and do not need the L suffix.
Source: https://docs.python.org/3.0/whatsnew/3.0.html#integers

Scripts generated by pycdc from Python 3 that contained long numeric integers would not work on Python 3 because it always suffixed them with L.

Note: I am not sure how to adapt the test suite to reflect this.
Should I just add the .pyc file without changing test_integers.py ? That file was made with Python 2 in mind (e.g. print without parenthesis).
EDIT: Nvm, there is too many differences (e.g. sys.maxint was removed in Python 3).

[Levak]

Maybe we can change test_integers.py this way?

Python 3

$ echo 'print(24**24)' | python3 -m dis -
  1           0 LOAD_NAME                0 (print)
              2 LOAD_CONST               2 (1333735776850284124449081472843776)
              4 CALL_FUNCTION            1
              6 POP_TOP
              8 LOAD_CONST               1 (None)
             10 RETURN_VALUE

Python 2

$ echo 'print(24**24)' | python2.7 -m dis -
  1           0 LOAD_CONST               2 (1333735776850284124449081472843776L)
              3 PRINT_ITEM          
              4 PRINT_NEWLINE       
              5 LOAD_CONST               1 (None)
              8 RETURN_VALUE