* record/use the code page of string constants typecasted to an ansistring
    type with a non-default code page
   TODO: ensure that string constants typecasted to ansistring become
     ansistrings rather than typeless string constants

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25207 3ad0048d-3df7-0310-abae-a5850022a9f2