Fix Subsurface build with Qt 5.4.1 and later

The intention had been all along to use the 5.4 QSysInfo API, but due to
a silly mistake in the QT_VERSION check, it never got enabled for 5.4.0.
On 5.4.1 it does get enabled and, unfortunately, causes compilation
errors because the API changed between the time we backported to
Subsurface and the final version.

This commit backports the final QSysInfo API from Qt 5.4 into
Subsurface, which includes the renaming of a few functions. Since the
prettyOsName function no longer exists in the Qt API in that form, I've
reimplemented it using the API that does exist.

Signed-off-by: Thiago Macieira <thiago@macieira.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

0 files changed, 0 insertions, 0 deletions