Move default git-roots from .. to a subdirectory, to avoid disasters

Author: inducer

git-roots/.gitkeep

@@ -87,7 +87,7 @@
 # directory of where you put the Relate source tree.
 
 #GIT_ROOT = "/some/where"
-GIT_ROOT = ".."
+GIT_ROOT = "git-roots"
 
 # }}}