Perhaps the BytesParser 'text' argument should really be bytes, but
it hasn't been, it has been text, so for backward compatibility
and for consistency with the regular Parser class, I'm keeping it
as 'text'.

test_tools is pretty much useless unless somebody copies the scripts
it tests into the proper location, but we might as well install it
anyway to make sure it skips properly.  test_warnings just didn't get
included when it was turned into a package in 94966dfd3bd3.

Issue #27870: A left shift of zero by a large integer no longer attempts to allocate large amounts of memory.

Issue #25402: in int-to-decimal-string conversion, reduce intermediate storage requirements and relax restriction on converting large integers. Patch by Serhiy Storchaka.

numbers.  Patch by Stefan Behnel.

creates not a cursor.  Patch by Xiang Zhang.

creates not a cursor.  Patch by Xiang Zhang.

Patch by Xiang Zhang.

In Subversion r86731, the path was changed from $(BINLIBDEST)/config to
$(LIBDEST)/config-$(LDVERSION).

Also adjust the test condition, because enable-meta-key was only added in
6.1, not 6.0.

The previous attempt to determine the file’s Content-Length gave a false
positive for pipes on Windows.

Also, drop the special case for sending zero-length iterable bodies.