[pgpool-committers: 5028] pgpool: Update clean.sh which clean up regression test results.

[Bo Peng]

Update clean.sh which clean up regression test results.

Patch provided by Jesper Pedersen.

Branch
------
V3_4_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=1457c2a4a6a13351508d04945d573fa3a54e8866

Modified Files
--------------
src/test/regression/clean.sh                                | 13 +++++++++++++
.../tests/010.rewrite_timestamp/timestamp/Makefile          |  1 +
2 files changed, 14 insertions(+)