Build ghdfs version for each Hadoop client version

[dmvieira]

It's important to Ghdfs be able to run with a wide range of Hadoop versions and delivery a consistant and common api for all ranges, and on the other hand, provide specific api implementations for each version, enabling the version to be capable of delivering the most advanced hdfs APIs and implementations from future versions.

For an example of a real issue, here is: #3

#edited