Qt5

[Alexander Monakov]

On Tue, 6 May 2014, José Fonseca wrote:

> Unless there are concerns/objections I'll merge this one of these days.

No objection, but a slight concern: Lawrence (CC'ed) contributed some GUI
patches recently, I suppose it would be nice to ask if installing Qt 5 is not
a problem for him (qt5 is not available in every distro yet).

Another concern is that some of the users might be running old/stable/lts
branches of distributions such as Debian stable or Ubuntu 12.04; such users
will be unable to build the GUI after the merge.  Perhaps the README could be
amended with a brief notice that in such situation people can checkout an
older revision (e.g. the 5.0 tag) and build that instead of master?

Alexander