rearrange methodcaller_new so that the main error case does not cause uninitialized memory usage (closes #27783)

The original problem has been fixed in newer versions of FreeBSD.
Patch by Dimitry Andric of the FreeBSD project.

Patch by Ronald Oussoren.

Reported by Thomas E. Hybel

Reported by Thomas E. Hybel

instead of overriding methods with mocks in original class and module.
This makes the 2.7 test_textview nearly identical to the 3.5/.6 test.

Initial patch by Jelle Zijlstra.

Patch by Julien Palard.

Ignore the HTTP_PROXY variable when REQUEST_METHOD environment is set, which
indicates that the script is in CGI mode.

Issue reported and patch contributed by Rémi Rampin.

Based on patch by Ville Skyttä.

The dependendency on the $(PGEN) variable must only be
set when not cross-compiling. When cross-compiling,
$(PGEN) will not be used, so no need to build it.

Patch by Thomas Perl.

* Initialize restype and flags fields to fix a crash when Python runs on a
  read-only file system
* Use Py_ssize_t type rather than int for the "i" iterator variable
* Reorder assignements to be able to more easily check if all fields are
  initialized

Issue #11048. Initial patch written by Marcin Bachry.

Patch by Xiang Zhang.

Ported from patches by Xiang Zhang, Nadeem Vawda, and myself.

Patch by Alakshendra Yadav.

Patch by Xiang Zhang.

Patch by Ammar Askar.

concatenations and repetitions.  Based on patch by Xiang Zhang.

This changes the main documentation, doc strings, source code comments, and a
couple error messages in the test suite. In some cases the word was removed
to fix the grammar.