python3: port some patches from python

Based on the idea that 'what-works-on-python-should-work-on-python3'
because they share the same trunk, these patches have been copied over
from the python package.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python3/patches/007-distutils-do-not-adjust-path.patch

@@ -0,0 +1,10 @@
+--- a/Lib/distutils/command/build_scripts.py
++++ b/Lib/distutils/command/build_scripts.py
+@@ -89,6 +89,7 @@ class build_scripts (Command):
+                     adjust = 1
+                     post_interp = match.group(1) or ''
+ 
++            adjust = 0
+             if adjust:
+                 log.info("copying and adjusting %s -> %s", script,
+                          self.build_dir)