Issues with 0.6.0

[devldevelopment]

Currently the compile fails with

WriteType.getOpType and ReadType.getOpType
not being present in 0.6.0
mReadType = ReadType.getOpType(mTaskConf.getProperty("read.type"));

for example:

Also tfs.exist expects URI and not string.

!tfs.exist(new TachyonURI(readDir))

[swatDong]

Thanks.
Now Tachyon-Perf is merged as a sub-module of Tachyon in this branch (https://github.com/amplab/tachyon/tree/perf) to keep up with 0.6.0-SNAPSHOT.