Update xrootd to version 4.5.0

[smuzaffar]

No description provided.

[smuzaffar]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/cmsdist-test-pr/401/console

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_8_1_X/gcc530next.

@cmsbuild, @smuzaffar, @iahmad-khan, @davidlange6 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.

[cmsbuild]

-1

Tested at: 868f366

You can see the results of the tests here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2648/401/summary.html

I found follow errors while testing this PR

Failed tests: UnitTests

• Unit Tests:

I found errors in the following unit tests:

---> test TestFWCoreIntegrationStandalone had ERRORS

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2648/401/summary.html

[cmsbuild]

backport done
Successfully backported PR #2648 as #2733 for branch IB/CMSSW_8_1_X/gcc530

[cmsbuild]

backport done
Successfully backported PR #2648 as #2734 for branch IB/CMSSW_7_6_X/stable

[cmsbuild]

backport done
Successfully backported PR #2648 as #2735 for branch IB/CMSSW_7_5_X/stable

[cmsbuild]

backport done
Successfully backported PR #2648 as #2740 for branch IB/CMSSW_8_0_X/gcc530