- improve dynamic state selection, use both strategies, if the first …

…fails try the second

- get rid of the wanrings when build bootstrapped compiler
- add some comments

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@14640 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Compiler/BackEnd/BackendDAEOptimize.mo

@@ -9663,7 +9663,8 @@ algorithm
     case (clst::rest,_,_,_,_,_,_,_)
       equation
         elst = List.map1r(clst,arrayGet,mapIncRowEqn);
-        e::{} = List.fold2(elst,uniqueIntLst,mark,columark,{});
+        elst = List.fold2(elst,uniqueIntLst,mark,columark,{});
+        {e} = elst;
         e = eindxarr[e];
         vlst = List.map1r(clst,arrayGet,ass2);
         vlst = List.map1r(vlst,arrayGet,varindxarr);