Qt status

Try to set the initial window sizes to be big enough to show the
full welcome line in the message window when the Qt settings
(Preferences on OSX) specify Large font (Huge/Medium/Small/Tiny
seemed ok but I wasn't systematic about checking them).

While at it, I added a long comment about the status window format
and noticed a bug with experience formatting there.  Again only
seemed to matter for Large font but the change to fix ignores font
size.

Plus add a couple of Qt "issues", one old and one just discovered.

win/Qt/qt_main.cpp

@@ -1138,6 +1138,16 @@ void NetHackQtMainWindow::layout()
         // call resizePaperDoll() indirectly...
         qt_settings->resizeDoll();
 #endif
+        // reset widths
+        int w = width(); /* of main window */
+        // 10: approximate size of resizing hotspots
+        int d = qt_settings->doll_is_shown ? 10 + invusage->width() + 10 : 10;
+        if (d % 4)
+            d += 4 - d % 4;
+        splittersizes[2] = w / 2 - (d * 1 / 4); // status
+        splittersizes[1] = d - 10;              // invusage
+        splittersizes[0] = w / 2 - (d * 3 / 4); // messages
+        hsplitter->setSizes(splittersizes);
     }
 }
 
@@ -1162,8 +1172,8 @@ void NetHackQtMainWindow::resizePaperDoll(bool showdoll)
         hsplitter->setSizes(hsplittersizes);
     }
 
-    // Height limit is 48 pixels per doll cell;
-    // values greater than 44 need taller window which pushes the map down.
+    // Height limit is 48+2 pixels per doll cell plus 1 pixel margin at top;
+    // values greater than 42+2 need taller window which pushes the map down.
     // FIXME: this doesn't shrink the window back if size is reduced from 45+
     int oldheight = vsplittersizes[0],
         newheight = w->height();