signals and termios WIP

+ shell script placeholder
+ generics functions
+ valgrind add_history() supp
+ misc

valgrind_readline.supp

@@ -4,3 +4,10 @@
    ...
    fun:readline
 }
+
+{
+   <readline history>
+   Memcheck:Leak
+   ...
+   fun:add_history
+}