zshrc: ignore error from echotc.

This can be triggered if the terminal type is vt220.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
vimrc: set textwidth to 79 for Python.

The pep8 syntax checker really doesn't like it when you use more than 79
columns.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add PEP8 Python indent submodule.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>