bitbake: lib: Clean up various file access syntax

Python 3 is stricter about how files are accessed. Specficially:

 * Use open(), not file()
 * Use binary mode for binary files (when checksumming)
 * Use with statements to ensure files get closed
 * Add missing file close statements

(Bitbake rev: 9f08b901375ba640f47596f1bcf43f98a931550f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/parse/parse_py/BBHandler.py

@@ -104,6 +104,7 @@ def get_statements(filename, absolute_filename, base_name):
             if not s: break
             s = s.rstrip()
             feeder(lineno, s, filename, base_name, statements)
+        file.close()
         if __inpython__:
             # add a blank line to close out any python definition
             feeder(IN_PYTHON_EOF, "", filename, base_name, statements)