vimrc: patchs for text objects from paradigm

https://groups.google.com/forum/#!searchin/vim_dev/paradigm/vim_dev/pZxLAAXxk0M/kTPURNOoHXYJ
https://groups.google.com/forum/#!searchin/vim_dev/paradigm/vim_dev/I9sKIJh-uT4/HLhIsOVyb7AJ