Merge #6498 fix from 3.1.

diff --cc Doc/c-api/veryhigh.rst
Simple merge

diff --cc Python/pythonrun.c
index 1e2dd586b471a231068acc7cbae21a634668e1a4,c4ae9211ffa1d4ea2c44e25fe29e670d5d801110..084db12f635e12ea6dd60f5ebc0c2aa2bebdd2cf
--- 1/Python/pythonrun.c
--- 2/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@@ -78,9 -81,8 +78,9 @@@ extern void _PyGILState_Fini(void)
  
  int Py_DebugFlag; /* Needed by parser.c */
  int Py_VerboseFlag; /* Needed by import.c */
 +int Py_QuietFlag; /* Needed by sysmodule.c */
  int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
- int Py_InspectFlag; /* Needed to determine whether to exit at SystemError */
+ int Py_InspectFlag; /* Needed to determine whether to exit at SystemExit */
  int Py_NoSiteFlag; /* Suppress 'import site' */
  int Py_BytesWarningFlag; /* Warn on str(bytes) and str(buffer) */
  int Py_DontWriteBytecodeFlag; /* Suppress writing bytecode files (*.py[co]) */