Added google re2 to thirdparty.
Switch from boost::regex to google RE2.
Improve failed to start error messages.
IMPALA-293: Impala is unable to query RCFile tables which describe less columns than the file's header.
Don't use std::string in StringFunctions::Substring
IMPALA-16: Impala returns 0 for bad time values in UNIX_TIMESTAMP, Hive returns NULL
IMPALA-329: Always print FE stack trace in BE log
Bump version to v1.1
Report error when using '*' in select without from.
Add remote server pprof handlers
Remove planservice
Remove unused PlanFragmentId
IMPALA-63: Catalog / db count metrics
IMPALA-298: lzo scanner tries to read past end of file
IMPALA-256 updated HS2 api and implement GetLog
Fix parquet incompatibilities.
IMPALA-307 add raw output for debug webpage
Fix unstable ordering with nans.
Small updates to query profiles.

IMPALA-318: Profile for 'show tables' missing summary information
IMPALA-322: Provide a mechanism for getting error / warning information for queries in the profile
IMPALA-210: Add debug webpage link to /backends