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
or edited some other way to fix the grammar.

Issue #25316: distutils raises OSError instead of DistutilsPlatformError when MSVC is not installed.

Patch by TAKASE Arihiro.

Issue #25027: Reverts partial-static build options and adds vcruntime140.dll to Windows installation.

This ensures that wheels will work when moved to machines that have the same subset of the MSVC libraries as a regular CPython install. Specifically, vcruntime##0.dll may not be installed, and should not be a dependency.

Patch by Martin Panter.

The concept of .pyo files no longer exists. Now .pyc files have an
optional `opt-` tag which specifies if any extra optimizations beyond
the peepholer were applied.

robust at shutdown. If needs to release multiple resources, they are released
even if errors are occured.

robust at shutdown. If needs to release multiple resources, they are released
even if errors are occured.

implementation in issue #21408 they are redundant.