Fix java.lang.IllegalArgumentException in TachyonFS.createAndGetUserUnderfsTempFolder
Merge pull request #82 from GraceH/IAE-in-TachyonFS

Fix IAE in TachyonFS.createAndGetUserUnderfsTempFolder
Update slaves
Merge pull request #83 from ash211/patch-2

Update slaves
format the style of some imports
Merge branch 'amplab' into utils-fix

Conflicts:
	src/main/java/tachyon/UnderFileSystemHdfs.java
merge the branch "amplab"