Implement Ada exception processing

Register a global exception action with the Ada runtime to log uncaught
exceptions to the daemon log and terminate.

src/charon-tkm/build_tests.gpr

@@ -3,7 +3,7 @@ with "build_common";
 project Build_Tests is
 
    for Languages use ("Ada", "C");
-   for Source_Dirs use ("src/tkm", "src/ees", "tests");
+   for Source_Dirs use ("src/ees", "src/ehandler", "src/tkm", "tests");
    for Main use ("test_runner");
    for Object_Dir use Build_Common.Obj_Dir;