git 1.9.0 changed the rules on file:// urls

used to allow "file://foo" to mean "foo in current directory", but now it's
not allowed!
SAFE_CONFIG fixup should happen in core...

otherwise it doesn't help 'option' lines, nor gitolite git-config queries
(which see the "safe" value, which is mostly useless).
info: learns -json option
(experimental) trace rules using access command
allow strings as macro arguments

thanks to Jason Donenfeld [1] as well as apologies for not being able to push
this out till now!

[1]: https://groups.google.com/forum/#!searchin/gitolite/macros/gitolite/3ypDcm9jTGU/PoVCoIVscaUJ