test files.

requires them.  Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface.  Fixed
shebang line to use python3 executable in the unittestgui script.

system python.

illegal attribute name.  Found by INADA Naoki.

Patch from Andrew Barnert.

This fixes an edge case (20206) where if the input ended in a character
needing encoding but there was no newline on the string, the last byte
of the encoded character would be dropped.  The fix is to use a more
efficient algorithm, provided by Serhiy Storchaka (5803), that does not
have the bug.

Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in modules and in documentation.

functions now conform to PEP 3333 when handle non-ASCII URLs.

invalid file-obj. Also use __bool__ to determine the bool of the FieldStorage
object.

Fixed a regression inroduced in issue #6157.

The application object must return an iterable yielding bytestrings.

ifconfig executable is not available.

Incorrect requirements can cause memory swapping.

a help on environment with too small COLUMNS.  Based on patch by
Elazar Gershuni.