IMPALA-5057: Upgrade glog (0.3.4-p2) and gflags (2.2.0)
IMPALA-5057: Upgrade glog (0.3.4-p2) and gflags (2.2.0)

Change-Id: If5c8718c67f021e18b3b95178b077fc147d6fcee
Reviewed-on: http://gerrit.cloudera.org:8080/6436
Reviewed-by: Tim Armstrong <2f8e34250f03a653da3dc27f7ec203eafdde80fc@cloudera.com>
Tested-by: Impala Public Jenkins

michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,cloudera/Impala