[Impala-ASF-CR] IMPALA-4096: Allow clean.sh to work from snapshots

["Jim Apple (Code Review)" <ge...@cloudera.org>]

Jim Apple has uploaded a new patch set (#2).

Change subject: IMPALA-4096: Allow clean.sh to work from snapshots
......................................................................

IMPALA-4096: Allow clean.sh to work from snapshots

buildall.sh calls bin/clean.sh, which fails when not in a git
directory. This skips the "git clean" steps when not in a git
checkout.

Todd Lipcon found this when testing a snapshot created using git
archive.

Change-Id: I12dd9035298151557491009680d66d25c8f58c1d
---
M bin/clean.sh
1 file changed, 5 insertions(+), 3 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/36/4336/2
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I12dd9035298151557491009680d66d25c8f58c1d
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Jim Apple <jb...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dh...@cloudera.com>
Gerrit-Reviewer: Lars Volker <lv...@cloudera.com>