try auto fix improper config on shark client launch.
merge from upstream/master.
fix type missmatch.
Fixed testCliDriver_exim_* tests (check local Path before using)
Merge branch 'master' of https://github.com/dosoft/shark into exim-tests
Removed hadoop-test-0.20.2.jar from the bin/dev/test
Merge pull request #246 from ChengXiangLi/fixConfigError

try auto fix improper config on shark client launch.
Merge pull request #283 from harveyfeng/master

test staging stuff
add Tachyon Related Configuration into conf template
Merge pull request #285 from haoyuan/master

add Tachyon Related Configuration into conf template
Merge pull request #286 from rxin/cache

Make _cached memory_only (consistent with pre-0.8.1 release).
(cherry picked from commit bd9adfa2ad9d6aeabf7c822df5b1234e6267af66)

Signed-off-by: Reynold Xin <rxin@apache.org>
Merge pull request #276 from dosoft/hadoop-test

Removed hadoop-test-0.20.2.jar from the bin/dev/test
Merge pull request #273 from dosoft/exim-tests

Fixed testCliDriver_exim_* tests (check local Path before using)
Revert "Merge pull request #286 from rxin/cache"

This reverts commit 960717cf04b31727dc90958a8d35312778b5b619.