Python-2.7.14 breaks on 12-CURRENT

[Yuri]

I've just re-created the 12-CURRENT amd64 poudriere jail, and python 
breaks with the latest ports tree:


cc -c -fPIC -fno-strict-aliasing -O2 -pipe  -fstack-protector 
-fno-strict-aliasing -DNDEBUG  -I. -IInclude -I./Include 
-I/usr/local/include -I/usr/local/include -fPIC -DPy_BUILD_CORE -o 
Modules/_math.o Modules/_math.c
/wrkdirs/usr/ports/lang/python27/work/Python-2.7.14/Modules/_heapqmodule.c:600:21: 
warning: illegal character encoding in string literal 
[-Winvalid-source-encoding]
[explanation by Fran<E7>ois Pinard]\n\
                     ^~~~
Include/Python.h:171:60: note: expanded from macro 'PyDoc_STRVAR'
#define PyDoc_STRVAR(name,str) PyDoc_VAR(name) = PyDoc_STR(str)
                                                            ^
Include/Python.h:173:24: note: expanded from macro 'PyDoc_STR'
#define PyDoc_STR(str) str
                        ^
1 warning generated.



Yuri