UC-2610:  Phone identity entries may contain blank ELIN fields.   This patch validates against these blank entries.
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04
Merge branch 'release-14.04' of github.com:SIPfoundry/sipxecs into release-14.04