lib/conf: include torint.h in files that use it.

This frees us from some dependencies on include order.

src/lib/conf/confdecl.h

@@ -51,6 +51,7 @@
 
 #undef CONF_CONTEXT
 #include "lib/cc/tokpaste.h"
+#include "lib/cc/torint.h"
 
 /**
  * Begin the definition of a configuration object called `name`.

src/lib/conf/conftesting.h

@@ -12,6 +12,8 @@
 #ifndef TOR_LIB_CONF_CONFTESTING_H
 #define TOR_LIB_CONF_CONFTESTING_H
 
+#include "lib/cc/torint.h"
+
 #ifndef COCCI
 #ifdef TOR_UNIT_TESTS
 #define USE_CONF_TESTING