Option in `bpls` to show the expression string for derived variables #4858

Job	Run time
git_checks	8s
format	29s
linux_el8 (el8, icc, mpich)	24m 37s
macos (macos-11, shared)	34m 24s
linux_el8 (el8, oneapi, mpich)	25m 58s
CodeQL (cpp)	24m 50s
docker (ubuntu-bionic)	8m 45s
macos (macos-12, static)	6m 3s
macos (macos-12, shared)	16m 7s
windows (win2019, shared, serial)	11m 49s
linux_ubuntu (ubuntu20.04, gcc8, shared, mpich)	15m 34s
windows (win2019, shared, ompi)	17m 8s
linux_ubuntu (ubuntu20.04, gcc9, shared, mpich)	18m 21s
windows (win2022, shared, serial)	12m 3s
linux_ubuntu (ubuntu20.04, gcc10, shared, mpich)	18m 25s
windows (win2022, shared, ompi)	16m 33s
linux_ubuntu (ubuntu20.04, gcc11, shared, mpich)	19m 5s
windows (win2022, static, serial, windows-2022, vs2022)	13m 17s
linux_ubuntu (ubuntu20.04, clang6, shared, mpich)	15m 38s
linux_ubuntu (ubuntu20.04, clang10, shared, mpich)	20m 7s
linux_ubuntu (ubuntu20.04, gcc8, ompi)	34m 24s
linux_ubuntu (ubuntu20.04, gcc8, serial)	10m 52s
linux_ubuntu (ubuntu20.04, clang6, ompi)	30m 1s
linux_ubuntu (ubuntu20.04, clang6, serial)	11m 23s
linux_ubuntu (ubuntu20.04, gcc8, static, ompi, build_only)	7m 31s
linux_ubuntu (ubuntu20.04, clang6, static, ompi, build_only)	6m 59s
linux_ubuntu (ubuntu20.04, gcc8, static, serial)	6m 41s
contract (examples)	2m 14s
contract (lammps)	4m 25s
contract (tau)	10m 50s
build_and_test	1s
	7h 24m 42s

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