try auto fix improper config on shark client launch.
merge from upstream/master.
fix type missmatch.
Fix Bug of Join Filter
Should be included only once for rows from either side that doens't pass the join filter condition
code refactoring the join filter
Ignore JoinOperator for now.

It might not be too effective anyways, since we don't track Hive's version of stats.
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 #269 from harveyfeng/master

Ignore Hive JoinReorder optimizer for now.
use "edu.berkeley.cs.shark"
Merge pull request #277 from harveyfeng/master

Use "edu.berkeley.cs.shark"
Merge pull request #279 from harveyfeng/branch-0.9

get rid of hcatalog dependency
Fixed a bug in compression that delta encoding is chosen for every column.
Also improved compression performance.
Fixed log message for compression type.
Remove HIVE_HOME from run scripts.
Merge pull request #281 from harveyfeng/master

Remove HIVE_HOME from run scripts.
Merge pull request #280 from rxin/compress

Compression fixes
test staging stuff