fix C major issues

- use delays to implement setup_call
- fix user_* flag
- error handling i CXX should b local
- fix mess on  how to call openQuert
- deter pt -> from a pointer to another one
- avoid text forms when you can use C: LOCLS to locals.h
- fux seto_call
- new gated call
- mem streams

os/charsio.c

@@ -1165,7 +1165,7 @@ leaving the current stream position unaltered.
 
 */
 
-void Yap_flush(void) { CACHE_REGS(void) flush_all_streams(PASS_REGS1); }
+void Yap_flush_all(void) { CACHE_REGS(void) flush_all_streams(PASS_REGS1); }
 
 void Yap_FlushStreams(void) { CACHE_REGS(void) flush_all_streams(PASS_REGS1); }