upgrade python3 to version 3.6.4
tree38782d9c91242eda1f21b3f4d556a93f195096c2
-rw-r--r-- 296 .gitignore
drwxr-xr-x - archive
-rwxr-xr-x 9700 bootstrap
drwxr-xr-x - compilers
-rwxr-xr-x 3206 darkcrusade
-rwxr-xr-x 3484 enter-chroot
drwxr-xr-x - jul
drwxr-xr-x - patches
drwxr-xr-x - qi
drwxr-xr-x - recipes
drwxr-xr-x - sources
drwxr-xr-x - stages
drwxr-xr-x - targets