CDH4 port

Changes include:
* Porting HiBench to CDH4.
* Cange the report format.
Update README.md
Add Counters.java
Update README.md
fix bug in funcs.sh
Merge pull request #7 from zkld123/master

fixed a bug in funcs.sh
Remove the unused directory common/mahout-distribution-0.7-hadoop1/distribution/target/mahout-distribution-0.7-src and all the content in it
to solve the long path name problem when unzipping compressed project file downloaded from github.
Merge pull request #11 from kai-wei/master

fix unzip issue
port sort/terasort/wordcount/dfsioe on top of hadoop 2
port bayes kmeans on to hadoop2
update Readme
Add setvardef function to pull workload parameters from CloudBench
Merge YARN and CloudBench changes to hibench-config.sh
Added changes to yarn branch made by Daniel Bowers