qbittorrent: bump to version 3.3.4.

* Upgrade 3.3.1 to 3.3.4, switching back to Qt4. The reason is that
  although the application builds fine against Qt5 and even seems to
  work, it cannot save its configuration. The Qt5-based version of
  qbittorrent is therefore not usable. A Qt5-based variant is added
  with all architectures marked as untested in case someone would
  like to troubleshoot the issue.
* Drop 3.2.3 (which used Qt4) as we now have 3.3.4 (also Qt4-based).
* Replace hard coded info in qbittorrent.rdef by @FIELD@-style vars
  to make it generic with regards to the $portVersion.
* Added missing lib:libexecinfo and lib:libssl in REQUIRES to match
  their devel: counterparts in BUILD_REQUIRES.
* Added dependency on libGL, as suggested by diversys. It seems to me
  that it is not required but I'm probably missing something.

Warning: If building against Qt4 fails then uninstall Qt5 and retry.

net-p2p/qbittorrent/additional-files/qbittorrent.rdef

@@ -1,18 +1,18 @@
 
-resource app_signature "application/x-vnd.qbittorrent";
+resource app_signature "@APP_SIGNATURE@";
 
 resource app_flags B_MULTIPLE_LAUNCH;
 
 resource app_version {
-	major  = 3,
-	middle = 2,
-	minor  = 3,
+	major  = @MAJOR@,
+	middle = @MIDDLE@,
+	minor  = @MINOR@,
 
-	variety = B_APPV_DEVELOPMENT,
+	variety = B_APPV_FINAL,
 	internal = 0,
 
 	short_info = "qBittorrent",
-	long_info = "qBittorrent - BitTorrent client in C++ and Qt.\nCopyright ©2006-2015 Christophe Dumez"
+	long_info = "qBittorrent - BitTorrent client in C++ and Qt.\nCopyright ©2006-2016 Christophe Dumez"
 };
 
 resource vector_icon array {