[ci skip]

Without this the "cd scripts/.." might change to another dir (since
CDPATH is looked at before a local path), and then NEOVIM_SOURCE_DIR
might end up being "/somewhere/else\n/somewhere/else" (since the "cd"
prints the dir already in that case).

Closes https://github.com/neovim/neovim/pull/5213.

option: Do not expand options, obtained from XDG vars

Fixes https://github.com/neovim/neovim/issues/5060.

It is a wrong thing to do, this makes valid variable values be treated 
incorrectly: in

    XDG_DATA_HOME='/home/$foo/.local/share'

`$foo` should be treated literally and not expanded to `foo` environment 
variable value.

Also makes option_expand not try to expand too long strings even if these too 
long strings are default values. Previously it thought that default values 
should always be expanded. Also does not try to expand NULL should it be the 
default value just in case.

Fixes #4961

goto statement was only introduced in Lua 5.2.

vimpatch.sh: fix awk expr

If a user has multiple remotes set for neovim/neovim, then
find_get_remote was returning 'remote1\nremote2\n', which breaks
anything trying to use it.  Since we're just using this remote to fetch
from, any one will do.