Merge topic 'lcc-updates'

fe1903326c Tests: Avoid procedure stack overflow in broken libc on Elbrus
b7f9d24b40 Tests: Improve RunCMake.export expected output matching robustness
3377141c8f Tests: With lfortran < 1.24 skip cases broken by incorrect filename handling
020e80d825 LCC: Add missing C/CXX compiler version checks for -std options
76a0a67026 GetPrerequisites: Tolerate multiple leading '/' in system library paths

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !9099