Don't let the timezone end up as "/etc/localtime" (literally).

This was happening on systems where /usr/share was a symlink (due to lack
of space) (I realize now that mount --bind would have been much better).

Since the code does canonicalFilePath + startsWith(dir), we need to
use canonicalFilePath on dir too.

ktimezoned/ktimezoned.cpp

@@ -99,6 +99,7 @@ void KTimeZoned::init(bool restart)
         config.reparseConfiguration();
     KConfigGroup group(&config, "TimeZones");
     mZoneinfoDir     = group.readEntry(ZONEINFO_DIR);
+    mZoneinfoDir     = QFileInfo(mZoneinfoDir).canonicalFilePath(); // just in case /usr or /usr/share is a symlink
     mZoneTab         = group.readEntry(ZONE_TAB);
     mConfigLocalZone = group.readEntry(LOCAL_ZONE);
     QString ztc      = group.readEntry(ZONE_TAB_CACHE, QString());