Merge pull request #63 from elzaggo/develop

Added output_magic to private_encoding
Selected 2.5.2 and 2.6.0 hadoop versions
Added symlinks for the libhdfs versions 2.5.2 and 2.6.0
Added symlinks for the hadoop 2.5.2/2.6.0 configuration
Support hadoop 2.5.2/2.6.0 in the Travis hadoop installer
script: changed args.combiner_fn to args.combine_fn
Added Hadoop version 2.5.2 and 2.6.0 to the Travis configuration file
Merge branch 'lastest_hadoop_versions_support' into develop
app: fixed opt mirroring
Merge pull request #65 from simleo/fix_script_params

pydoop script: fix combine_fn arg
Merge pull request #67 from kikkomep/develop

Added support for Hadoop 2.5.2 and 2.6.0
updated README.md
added links
Merge pull request #68 from simleo/update_readme

Update readme
Import of hadoop 2.6.0 libhdfs

This version contains major bug fixes and general improvements.
Modified setup to use the new libhdfs.

The idea is to backport the 2.6.0 libhdfs to all 2.x versions of pydoop.
Fixed a missing errno reset bug.

Errno was not reset by hdfsListDirectory and this would break the python
driving code that is expecting to be able to resolve empty directories
from erros by looking at errno.
Minor cleanup in setup.py
Removed duplicated code
Merge pull request #69 from elzaggo/libhdfs_backport

Libhdfs backport