fix jython issue, flexibilize sysexec params

--HG--
branch : trunk

_py/path/local.py

@@ -542,14 +542,15 @@ class LocalPath(FSBase):
                     raise
                 return mod
 
-    def sysexec(self, *argv):
+    def sysexec(self, *argv, **popen_opts):
         """ return stdout text from executing a system child process,
             where the 'self' path points to executable. 
             The process is directly invoked and not through a system shell. 
         """
         from subprocess import Popen, PIPE
         argv = map(str, argv)
-        proc = Popen([str(self)] + list(argv), stdout=PIPE, stderr=PIPE)
+        popen_opts['stdout'] = popen_opts['stderr'] = PIPE
+        proc = Popen([str(self)] + list(argv), **popen_opts)
         stdout, stderr = proc.communicate()
         ret = proc.wait()
         if py.builtin._isbytes(stdout):

testing/path/test_local.py

@@ -338,7 +338,7 @@ class TestImport:
 
     def test_pyimport_check_filepath_consistency(self, monkeypatch, tmpdir):
         name = 'pointsback123'
-        ModuleType = type(py.std.sys)
+        ModuleType = type(py.std.os)
         p = tmpdir.ensure(name + '.py')
         for ending in ('.pyc', '$py.class', '.pyo'):
             mod = ModuleType(name)