Add tools for fix -Wdocumentation

Use pragma to disable -Wdocumentation when include glib.h, gmodule or gtk/gtk.h

Change-Id: I576c0d5c4a12ac3b505ac9543646356ff29ac814
Reviewed-on: https://code.wireshark.org/review/5198
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>