Make the subprocesses work and return the right sys paths for the different versions

jedi/evaluate/compiled/subprocess/__main__.py

@@ -1,3 +1,15 @@
+import sys
+import os
+
+# Get the path to jedi.
+_d = os.path.dirname
+_jedi_path = _d(_d(_d(_d(_d(__file__)))))
+_parso_path = sys.argv[1]
+
+# This is kind of stupid. We actually don't want to modify the sys path but
+# simply import something from a specific location.
+sys.path[0:0] = [_jedi_path, _parso_path]
 from jedi.evaluate.compiled import subprocess
+sys.path[0:2] = []
 
 subprocess.Listener().listen()