For workloads that support Linux targets do not use
`uninstall_executable` as this is not available, instead use `uninstall` as
other targets should be able to determine the appropriate uninstallation
method.
- Add copyright headers to files that did not already have them
- Update the year to the last year the file was modified in files with
existing headers.
Add a workload for lat_mem_rd and bw_mem tests of LMbench benchmark, a suite of
portable ANSI/C microbenchmarks for UNIX/POSIX.
This is a port of corresponding workload from WA2.
