Pr80x L1T memory manage XMLConfigReader last 150 mb

[rekovic]

This is the back-port of the memory management fixes in L1T XMLConfigReader
and fixes for the subsequent worfkflow crashes uncovered.
Already in 81x (#16222)

[cmsbuild]

A new Pull Request was created by @rekovic for CMSSW_8_0_X.

It involves the following packages:

DataFormats/L1Trigger
L1Trigger/L1TCommon
L1Trigger/L1TMuonOverlap

@cmsbuild, @rekovic, @mulhearn, @davidlange6 can you please review it and eventually sign? Thanks.
@Martin-Grunewald this is something you requested to watch as well.
@slava77, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[rekovic]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/15794/console

[cmsbuild]

+1
Tested at: c0f8791
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16250/15794/summary.html
Additional comment: 'materialbudget'

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
0a9fe60
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16250/15794/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16250/15794/git-merge-result

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16250/15794/summary.html

[kkotov]

Hi @rekovic , I confirm that the L1T O2O payloads generated with this PR are identical to those generated a week earlier with #16198