Add some TALP enhancements

See merge request dlb/dlb!33

See #141

see #141

Anonymous regions are now called "Anonymous Region 1", "... 2", etc.
This is to have completely unique monitoring region names.

This flag should tell whether:
- the instrumentation is successfully initialized
- the instrumentation library is loaded
- the instrumentation is manually disabled via --no-instrument
- the Extrae symbols cannot be found

Flags --lewi-ompt and --talp-summary are multi-choices.

see #150

TALP fixes

Closes #149 and #148

See merge request dlb/dlb!32

Fix #149

Fix #148

Intel does not support atomic_int_least64_t yet

Resolve "Minor documentation issues"

Closes #143

See merge request dlb/dlb!31

- Add scripts usage
- Add faq about tracing
- Removed deprecated --dlb Mercurium flag

- Option type is now instrument_items_t
- Evens in tracing.h are now enum instead of macros to run more
    compiler checks

Fix #144

Implement specific cases for process mask getter and setter

Closes #145

See merge request dlb/dlb!30

Allow pid = 0 to refer to the current process

After some analysis, their performance is too similar and
spinlocks have a worse-case scenario fighting the OS scheduler