Update new BeyondCompare3 location

I'm trying to make C:/david like my ~/data
Fix git perforce commands to work with gitv

Gitv uses git filetype (instead of gitcommit) for its diff view.
We want these to apply in all git outputs, not just git commits.
I often use NotGrep; promote it to a standard map
Include more defaults in local.vim template

I use these settings at work and likely would want to use them
elsewhere.