[BUG] infinite loop on windows: searching for files

[bkreider]

ALL software version info

version 0.10.1

Description of expected behavior and the observed behavior

On windows there are two functions that recursively look in parent directories. Because the windows filesystem is case insensitive, it can get trapped at c:\ forever looping. These two functions suffer from the problem:

• local_state_file.py:42:def load_for_directory
• project_lock_file.py:45:def load_for_directory

When it gets to C:\ it does a string compare that looks like this: "c:\ == C:". Since this is never true, it gets trapped in an infinite loop.

       current_dir = directory
        while current_dir != os.path.realpath(os.path.dirname(current_dir)):
            for name in possible_project_lock_file_names:
                path = os.path.join(current_dir, name)
                if os.path.isfile(path):
                    return ProjectLockFile(path)

            if scan_parents:
                current_dir = os.path.dirname(os.path.abspath(current_dir))
                continue
            else:
                break

[AlbertDeFusco]

I believe this PR will fix the issue: #380