David Adam 484c1484c9 Customisable extra configuration, completion and function directories
- Add options to the autotools build to set the path for the "vendor"
   or "extra" configuration snippets, functions and completions
   directories.

 - Remove the vendor_completions directory from the Xcode build, as
   these are relocatable and compiling the paths in does not make sense.

This allows packaging tools like Homebrew and Nix to use a common
directory outside of the main prefix for third-party completions, and
to make these available for programmatic discovery through `pkg-config`.

Closes #2113
2016-04-04 15:58:13 -07:00
..
2016-03-20 12:20:39 +01:00