not be able to set PYTHONHOME in python3 binary.

[kuri65536]

PYTHONHOME environment cause segfault in python3 binary.

item	description
python	python3.4.3
binary	r18
android	2.3.6 (API10)

/data/data/com.googlecode.python3forandroid # export PYTHONHOME=`pwd`/files/python3
/data/data/com.googlecode.python3forandroid # sh /sdcard/download/standalone_python.sh 
Fatal Python error: Py_Initialize: can't initialize sys
sys.excepthook is missing
object  : ValueError('character U+7461642f is not in range [U+0000; U+10ffff]',)
type    : ValueError
refcount: 1
address : 0x4003c630
lost sys.stderr

[kuri65536]

This error still remains in Python 3.6.2.
Root cause is same as rave-engine/python3-android#7

[kuri65536]

Current status,

Version	API	issue	Python
Android 4.4	API 19	x	3.6.2
Android 6.0	API 24	o	3.6.2

It seems that some API of bionic did not work with PySys_Init.
Python3 need a patch to use with PYTHONHOME.