Add missing link dependency

[wmtan]

Add a missing link dependency for consistency with the ROOT 6 branch.
This pull request is not strictly necessary in this branch, but aids code commonality between 7_3_X and 7_3_ROOT6_X.

[cmsbuild]

A new Pull Request was created by @wmtan for CMSSW_7_3_X.

Add missing link dependency

It involves the following packages:

CondFormats/DTObjects

@apfeiffer1, @nclopezo, @cerminar, @cmsbuild, @diguida, @rcastello, @ggovi, @mmusich can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[apfeiffer1]

+1

[diguida]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_3_X IBs unless changes or unless it breaks tests.

[cmsbuild]

+1
Tested at: 1270456
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6126/557/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_3_X IBs unless changes (tests are also fine). This pull request will be automatically merged.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6126/557/summary.html