Add script to add existing files to my dotfiles

$ stow-add file/to-add component-to-add-it-to

This creates the necessary directories, moves the file and stows the
component so that the file is readily symlinked and available
afterwards.
Add customer script for blau
Make vim use the mouse if possible
Add file-line to vim

This allows to use eg ruby backtrace location specifications in the form
file:line as parameter to start vim to make it jump to the correct line.