[lttng-dev] LTTng-tools: Add support of named metadata and CTF enumerations

[Geneviève Bastien]

The following patch series in LTTng-tools add support of named metadata 
in tracepoints, and add the statedump in metadata of named CTF
enumerations.

This series goes with another patch series in LTTng-ust. Patch 1 works
with LTTng-ust master, but the other patches require LTTng-ust's series
patch 5.