Added isDirectory to tachyon file, added directory check in mkdir tests
Merge branch 'master' of https://github.com/amplab/tachyon
Use common conf in MasterLogWriterTest, include jsp compiler and runtime jars in pom
Fixed profiles for pom, changed log4j back to .17, removed duplicate function in tachyonFile
merge master
fix pom formatting
fix pom formatting some more
fix pom formatting some more
Merge pull request #27 from calvinjia/master

A few testing updates and pom update