* Refactor --lewi-mpi to --lewi-keep-one-cpu
* Now, the default option is to lend all on a blocking call
* Make deprecated options to print their description when used

This allows to use DLB MPI library and not use any MPI calls
for LeWI

* rename app to pop-metrics
* make pop-metrics the default argument
* add new argument none to disable the summary
* warn the user if DLB is not intercepting MPI calls,
    unless they explicitly set the option to none

fix #139

Move some intrinsics there, use C11 atomics when possible

Code quality

See merge request dlb/dlb!27

See #114

Resolve "LeWI support for TALP is missing some API calls"

Closes #116

See merge request dlb/dlb!26

Resolve "Impove Monitoring Regions instrumentation"

Closes #130

See merge request dlb/dlb!24

This is needed to instrument the Monitoring Regions and their
registered name as an event description in Extrae.

Fix lit decoding errors

See merge request dlb/dlb!25