[$] A GNU C Library update

A traditional feature of the tools track at the Linux Foundation'sCollaborationSummit is an update from the developers of the GNU C Library(glibc); that tradition was upheld in fine form at the 2015 event. Glibcdeveloper Roland McGrath noted that while the project is a criticalcomponent in vast numbers of Linux installations, it does not have a lot ofdevelopers working on it. Still, even with a relatively small developerbase, some real progress has been made over the last year.