Modification to vim alias

As I try to figure out how to work with vim and gui vim in Linux, I have
modified the vim aliases. Let's see if this lasts.

	modified:   bash_aliases
More mods for vim

Another tweak, this time to gitconfig, to get the vim environment working
smoothly.

	modified:   gitconfig
Single login for SSH

In an attempt to minimize the number of times that I have to type in my SSH
passkey, I added code that asks for the passkey once, at the beginning of the
terminal session.

	modified:   bash_config
Merge branch 'master' of github.com:soto97/dotfiles

I need to merge changes made on a linux machine with chagnes made on a Mac.