return the beginning/end of DST in local time, not UTC, for consistency with the other methods; fixed the test

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48997 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/datetime.cpp

@@ -1231,9 +1231,6 @@ wxDateTime wxDateTime::GetBeginDST(int year, Country country)
         }
 
         dt += wxTimeSpan::Hours(1);
-
-        // disable DST tests because it could result in an infinite recursion!
-        dt.MakeGMT(true);
     }
     else switch ( country )
     {
@@ -1332,9 +1329,6 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country)
         }
 
         dt += wxTimeSpan::Hours(1);
-
-        // disable DST tests because it could result in an infinite recursion!
-        dt.MakeGMT(true);
     }
     else switch ( country )
     {