Update tests support for Windows

Fixup common tests

    * Remove requirement for Python 2.6
    * Skip new failing test

Windows: Update url util to handle Windows paths (#27959)

    * update url util to handle windows paths

    * Update tests to handle fixed url handling

    * canonicalize path only when the path type matches the host platform

    * Skip some url tests on Windows

Co-authored-by: Omar Padron <omar.padron@kitware.com>

Use threading.TIMEOUT_MAX when available (#24246)

This value was introduced in Python 3.2. Specifying a timeout greater than
this value will raise an OverflowError.

Co-authored-by: Lou Lawrence <lou.lawrence@kitware.com>
Co-authored-by: John Parent <john.parent@kitware.com>
Co-authored-by: Betsy McPhail <betsy.mcphail@kitware.com>

lib/spack/external/ctest_log_parser.py

@@ -71,6 +71,8 @@
 import re
 import math
 import multiprocessing
+import sys
+import threading
 import time
 from contextlib import contextmanager
 
@@ -409,7 +411,12 @@ def parse(self, stream, context=6, jobs=None):
             pool = multiprocessing.Pool(jobs)
             try:
                 # this is a workaround for a Python bug in Pool with ctrl-C
-                results = pool.map_async(_parse_unpack, args, 1).get(9999999)
+                if sys.version_info >= (3, 2):
+                    max_timeout = threading.TIMEOUT_MAX
+                else:
+                    max_timeout = 9999999
+                results = pool.map_async(_parse_unpack, args, 1).get(max_timeout)
+
                 errors, warnings, timings = zip(*results)
             finally:
                 pool.terminate()