bpo-45952: Get the C analyzer tool working again. (gh-31220)

https://bugs.python.org/issue45952

Author: ericsnowcurrently

Tools/c-analyzer/cpython/_parser.py

@@ -215,6 +215,7 @@ def clean_lines(text):
 Modules/_testcapimodule.c	PyAPI_FUNC(RTYPE)	RTYPE
 Python/getargs.c	PyAPI_FUNC(RTYPE)	RTYPE
 Objects/stringlib/unicode_format.h	Py_LOCAL_INLINE(type)	static inline type
+Include/pymath.h	_Py__has_builtin(x)	0
 
 # implied include of pymacro.h
 */clinic/*.c.h	PyDoc_VAR(name)	static const char name[]