[SPARK-6324] [core] Centralize handling of script usage messages.#5841

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vanzin wants to merge 4 commits intoapache:masterfrom

vanzin:SPARK-6324

Commits on May 1, 2015

[SPARK-6324] [core] Centralize handling of script usage messages.
Marcelo Vanzin
committed
Fix exit code never being used when printing usage messages.
Marcelo Vanzin
committed
Filter output of Spark SQL CLI help.
Marcelo Vanzin
committed

Commits on Jun 2, 2015

Merge branch 'master' into SPARK-6324
Marcelo Vanzin
committed