Qt: Allow to build without exceptions enabled

[TheOneRing]

No description provided.

[dschmidt]

Hum ... exceptions are catchable, this isn't ... can we return an error instead?

[TheOneRing]

Hum ... exceptions are catchable, this isn't ... can we return an error instead?

We could, however the issue occurs in code we don't even use, it the client code I'd like to get rid of.
This is the only throw in the code -> no one expects a throw here, we would crash anyhow.
This changes fixes a build issue if we build the code with the KDE settings(as part of the owncloud client itself), which disable exceptions by default.
(Exceptions can mess with Qt)

src/libsync/libregraphapisrc-src/client/OAIServerConfiguration.h:61:21: error: cannot use 'throw' with exceptions disabled
                    throw std::runtime_error(QString("The variable " + name + " in the server URL has invalid value " + value + ".").toUtf8());

[dschmidt]

yeah ... well ...