Internal Jenkins has submitted this change and it was merged.

Change subject: IMPALA-3202: refactor scratch file management into TmpFileMgr
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IMPALA-3202: refactor scratch file management into TmpFileMgr

This is a pure refactoring patch that moves all of the logic
for allocating scratch file ranges into TmpFileMgr in anticipation of
this logic being used by the new BufferPool.

There should be no behavioural changes.

Also remove a bunch of TODOs that we're not going to fix.

Change-Id: I0c56c195f3f28d520034f8c384494e566635fc62
Reviewed-on: http://gerrit.cloudera.org:8080/4898
Reviewed-by: Tim Armstrong <tarmstr...@cloudera.com>
Tested-by: Internal Jenkins
---
M be/src/runtime/buffered-block-mgr-test.cc
M be/src/runtime/buffered-block-mgr.cc
M be/src/runtime/buffered-block-mgr.h
M be/src/runtime/tmp-file-mgr-test.cc
M be/src/runtime/tmp-file-mgr.cc
M be/src/runtime/tmp-file-mgr.h
6 files changed, 441 insertions(+), 432 deletions(-)

Approvals:
  Internal Jenkins: Verified
  Tim Armstrong: Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: I0c56c195f3f28d520034f8c384494e566635fc62
Gerrit-PatchSet: 7
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Internal Jenkins
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>

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