MINOR: Update Panagiotis from committer to PMC
MINOR: Update Panagiotis from committer to PMC

Change-Id: I6b4c53ecea7f685bd5100bff6a812d289bbdb708
Signed-off-by: Panagiotis Garefalakis <8558da2d5d3bcb87b2c2fa3d624ef2b99cf175e4@apache.org>

omalley/orc,apache/orc,omalley/orc,apache/orc,apache/orc,omalley/orc,apache/orc,apache/orc,apache/orc,apache/orc,omalley/orc,omalley/orc,apache/orc,omalley/orc,omalley/orc