One of the trends in law and development practice in the past few years has been towards emphasizing legal access for the poor. The high-level Commission on Legal Empowerment of the Poor issued its report in 2008, and I now see that the report has received the endorsement of the UN General Assembly (see Document A/C.2/64/L.4/Rev.2 if you are interested). Like much in law and development, it seems to reflect a consensus between political right and left: much of the emphasis is on formalization of property rights, but also on legal services to the poor and poverty reduction.
I must admit some skepticism about what all this means on the ground. Its probably safe to say that anything endorsed by the UN General Assembly must represent a consensus so shallow as to be insipid. In most countries, for structural reasons, the law is a mechanism in which the "haves come out ahead." Political movements, of course, can force redistribution much more effectively than the courts. I wonder if there is any evidence on this kind of thing affecting large scale change in any particular country.