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-issues.txt

@@ -59,4 +59,15 @@ code into its own routine and calling that for both types of windows.
 From the text window code, it sees the initial shift but not the ':'
 that should follow.
 
+Clicking on window close button pops up a confirmation dialog with
+  [  Save and exit  ]  [__Quit_without_saving__]
+with the second one highlighted.  Internally they're specified as
+"&Save" and "&Quit".  Typing <return> or <space> picks Quit, but
+typing 'Q' or 'q' picks Save-and-exit because Alt+Q is expected for
+the keyboard shortcut.
+
+The status window can't be resized while hitpointbar is active.
+Toggling it off, resizing as desired, then toggling it back on is a
+viable workaround.
+
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