Replace hardcoded texts with corresp. variables
Replace hardcoded texts with corresp. variables

- Use GIT_ORIGIN instead of origin
- Use GIT_FOLDER instead of .git

Signed-off-by: Fabien Dubosson <48c1b9fbbf00ac99c3c906dc36955160ef6a54c1@gmail.com>

tst2005/git-ws,StreakyCobra/gws,super7ramp/gws,aeten/gws