Summary:
Valgrind reports trivial leakages related to handling
objects and their converted strings.
Reviewers: thiblahute
Differential Revision: https://phabricator.freedesktop.org/D303
g-ir-scanner includes section docs as class/interface docs if the section name is equal to the lowercase type name.
Since all the documentation is in section blocks, rename them to match the type names.
https://bugzilla.gnome.org/show_bug.cgi?id=727776
