abandon attempts to make wxAnyStrPtr behave as bool: user-defined logical operators don't short circuit silently breaking existing code so it is better to not provide them at all; instead simply return bool from the new versions taking wxString::const_iterator; advise to use the new versions in the new code and so in our own files

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59829 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -39,6 +39,9 @@ changes:
   the returned string could be NULL and so a separate helper class is used. If
   you obtain compilation errors because of this, you can always correct them by
   explicitly assigning the function return value to a variable of wanted type.
+  A slightly more intrusive but better solution is to use ParseXXX() version
+  with wxString::const_iterator output parameter which simply returns bool to
+  indicate the parsing success.
 
 - Some structure fields which used to be of type "const wxChar *" (such as
   wxCmdLineEntryDesc::shortName, longName and description fields) are now of