GitLab

* gitfast: use $OSTYPE again

In the last update to upstream this was reverted:

 a56eac7a

 (Use OSTYPE instead of uname whenever possible for better speed. (#5496))
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

* gitfast: simplify plugin

No need to set and unset a variable we use once.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

* gitfast: add script to update from upstream

This would make easier the process of updating, and also not miss our
patches.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

* gitfast: update to upstream v2.21
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

* Stop loading git plugin
* Update completion and git-prompt to v2.10
* Update completion to v2.14

Sometimes we want to use the function directly (e.g. _git_checkout), for
example when zsh has the option 'complete_aliases', this way, we can do
something like:

  compdef _git gco=git_checkout
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

Previously, spaces in the path would result in wto separate errouneous
paths being parsed. This fixes that issue.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

Up to version 1.8.2.1.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

Using the upstream git completion and prompt stuff.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>