Do not set displayName in BaseQtVersion

This will trigger a run of qmake -query which depends on a virtual
method. Set the display name in the derived Qt versions instead.

Change-Id: I47380fd25d38a2cf748a26e9c8324f3b23cb3b39
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/android/androidqtversion.cpp

@@ -43,6 +43,7 @@ AndroidQtVersion::AndroidQtVersion()
 AndroidQtVersion::AndroidQtVersion(const Utils::FileName &path, bool isAutodetected, const QString &autodetectionSource)
     : QtSupport::BaseQtVersion(path, isAutodetected, autodetectionSource)
 {
+    setDisplayName(defaultDisplayName(qtVersionString(), path, false));
 }
 
 AndroidQtVersion *AndroidQtVersion::clone() const