Call lsinfo recusrively to populate artists and albums, instead of using listallinfo

ChangeLog

@@ -11,6 +11,8 @@
 6. Add option to set MPD top-level path. Only tracks that are under this path
    will be used to populate artist and album listings. This is mainly of use
    when MPD is configured to use a UPnP backend.
+7. Use lsinfo, and not listallinfo, to populate artists and albums by default.
+   Set alwaysUseLsInfo=false in Cantata's config file to disable this.
 
 1.5.2
 -----

README

@@ -429,12 +429,13 @@ alwaysUseHttp=<Boolean>
     Default is false.
 
 alwaysUseLsInfo=<Boolean>
-    By default, Cantata uses MPD's listallinfo command to retrieve the whole
-    music collection. This can fail (especially with MPD 0.18.x which needs
-    more memory), and if it does Cantata will fall back to calling
-    "lsinfo <dir>" for each directory. Setting this config item to true will
-    cause Cantata to always use this alternative method.
-    Default is false.
+    Versions of Cantata before 1.6 defaulted to using MPD's listallinfo
+    command to retrieve the whole music collection. This can fail (especially
+    with MPD 0.18.x which needs more memory), and if it does Cantata will
+    fallback to calling "lsinfo <dir>" for each directory. This fallback is now
+    the default from Cantata 1.6. To revert to first attempting listallinfo,
+    set this config item to false.
+    Default is true.
 
 menu=<Integer>
     Controls usage of menubar and menu button. If set to 1 then a menubar is
@@ -474,7 +475,7 @@ undoSteps=20
 mpdPoll=true
 mpdListSize=5000
 alwaysUseHttp=true
-alwaysUseLsInfo=true
+alwaysUseLsInfo=false
 menu=3
 stopHttpStreamOnPause=true
 cacheScaledCovers=true

gui/settings.cpp

@@ -801,7 +801,7 @@ QString Settings::lang()
 
 bool Settings::alwaysUseLsInfo()
 {
-    return cfg.get("alwaysUseLsInfo", false);
+    return cfg.get("alwaysUseLsInfo", true);
 }
 
 bool Settings::showMenubar()