python: add pylintrc and proxy pylint script.

The shebang line of pylint script points to /usr/fucking/bin/python.
Why?  Why do that at all?  I suspect it is pip or distutils doing that:
replace the shebang with the python used to build it.
env: put $SCRIPTSDIR to the front of the $PATH
vim: Refactor vimrc.
vim: fugitive leader mappings.