changed groupId from commons-math to org.apache.commons as suggested in http://markmail.org/message/hxdsteovws7lalsa
changed groupId from commons-math to org.apache.commons
as suggested in http://markmail.org/message/hxdsteovws7lalsa

git-svn-id: 314da00bb27944c957cb41b974675b6af0687dd7@657736 13f79535-47bb-0310-9956-ffa450edef68

Hipparchus-Math/hipparchus,sdinot/hipparchus,sdinot/hipparchus,Hipparchus-Math/hipparchus,Hipparchus-Math/hipparchus,apache/commons-math,apache/commons-math,apache/commons-math,apache/commons-math,sdinot/hipparchus,sdinot/hipparchus,Hipparchus-Math/hipparchus