Bye bye unity launchers.
new dir: git-related scripts
Git alias: ls-all-files

  - Lists all files in the repository for either all or specified
    branches `git ls-all-files`
  - Should be automatically picked up as an alias by virtue of the
    `git-` prefix and presence in PATH
PS1: added git variant

  - Now prepends the branch with either 'git:' or 'vcsh|repo:'
  - There's scope for extending this to deal with other git-based
    tools.
  - I'm not certain I'm content with the (...), perhaps rather {...}
Merge feature 'vcsh_prompt'
git-ls-all-files: chmod u+x