Also change BufferedReader.writable() and BufferedWriter.readable() to always
return False.

Affected classes are generic sequence iterators, iterators of bytearray,
list, tuple, set, frozenset, dict, OrderedDict and corresponding views.

Makefile.pre.in:
  - Modules/_math.o: Build using PY_CORE_CFLAGS as every extension

  - Modules/_math.o: Build using PY_CORE_CFLAGS as every extension
  - profile-opt: Fix bashism

These changes should not be visible to the user.

Adds a Python-2-only ssl module API and environment variable to
configure the default handling of SSL/TLS certificates for
HTTPS connections.

#26250: document the sqlite3.Cursor.connection attribute.  Initial patches by Aviv Palivoda and Varpu Rantala.

Issue #17758: Skip test_site if site.USER_SITE directory doesn't exist and
cannot be created.

#25687: clarify that errors in tearDown increase the total number of reported errors.  Initial patch by HyeSoo Park.

Tamás Bence Gedai.

multipliers, not final sizes.  Explain y default for .zoom and .subsample.
Initial patch by Serhiy Storchaka.

Closes #16851: Fix inspect.ismethod() doc, return also True if object is an
unbound method.

Patch written by Anna Koroliuk.