cmd, gitpython-developers#525: Always include stdout+stderr in exceptions

+ Ignore `with_extended_output` arg when reaising the exception, keep
its behavior when `status==0`.

Author: ankostis

git/cmd.py

@@ -649,10 +649,7 @@ def as_text(stdout_value):
         # END handle debug printing
 
         if with_exceptions and status != 0:
-            if with_extended_output:
-                raise GitCommandError(command, status, stderr_value, stdout_value)
-            else:
-                raise GitCommandError(command, status, stderr_value)
+            raise GitCommandError(command, status, stderr_value, stdout_value)
 
         if isinstance(stdout_value, bytes) and stdout_as_string:  # could also be output_stream
             stdout_value = safe_decode(stdout_value)