tests: cleanup

tests:
- add "hello" to test first basic compilation to file/memory
- add "more" test (tests2 suite)
- remove some tests

tests2:
- move into tests dir
- Convert some files from DOS to unix LF
- remove 2>&1 redirection

win32:
- tccrun.c: modify exception filter to exit correctly (needed for btest)
- tcctest.c: exclude weak_test() (feature does not exist on win32)

tccrun.c

@@ -615,8 +615,7 @@ static long __stdcall cpu_exception_handler(EXCEPTION_POINTERS *ex_info)
         rt_error(uc, "exception caught");
         break;
     }
-    exit(-1);
-    return EXCEPTION_CONTINUE_SEARCH;
+    return EXCEPTION_EXECUTE_HANDLER;
 }
 
 /* Generate a stack backtrace when a CPU exception occurs. */