Use a constant sentinel value in Plex instead of making it depend on the (32/64 bit) architecture.

Closes #3659.

Cython/Plex/Machines.pxd

@@ -3,6 +3,8 @@ cimport cython
 from .Actions cimport Action
 from .Transitions cimport TransitionMap
 
+cdef long maxint
+
 
 @cython.final
 cdef class Machine:

Cython/Plex/Machines.py

@@ -9,10 +9,7 @@ from __future__ import absolute_import
 import cython
 from .Transitions import TransitionMap
 
-try:
-    from sys import maxsize as maxint
-except ImportError:
-    from sys import maxint
+maxint = 2**31-1  # sentinel value
 
 if not cython.compiled:
     try:

Cython/Plex/Regexps.py

@@ -6,13 +6,11 @@ Regular Expressions
 from __future__ import absolute_import
 
 import types
-try:
-    from sys import maxsize as maxint
-except ImportError:
-    from sys import maxint
 
 from . import Errors
 
+maxint = 2**31-1  # sentinel value
+
 #
 #     Constants
 #

Cython/Plex/Transitions.py

@@ -4,12 +4,8 @@ Plex - Transition Maps
 
 This version represents state sets directly as dicts for speed.
 """
-from __future__ import absolute_import
 
-try:
-    from sys import maxsize as maxint
-except ImportError:
-    from sys import maxint
+maxint = 2**31-1  # sentinel value
 
 
 class TransitionMap(object):