added awaitShutdown

Author: antonbashir

binding/dart/lib/storage/storage.dart

@@ -72,6 +72,8 @@ class Storage {
 
   Future<void> awaitInitialized() => Future.doWhile(() => Future.delayed(awaitStateDuration).then((value) => !initialized()));
 
+  Future<void> awaitShutdown() => Future.doWhile(() => Future.delayed(awaitStateDuration).then((value) => initialized()));
+
   Future<void> awaitImmutable() => Future.doWhile(() => Future.delayed(awaitStateDuration).then((value) => !immutable()));
 
   Future<void> awaitMutable() => Future.doWhile(() => Future.delayed(awaitStateDuration).then((value) => !mutable()));

src/errcode.i

@@ -0,0 +1,18 @@
+-fexceptions
+-funwind-tables
+-fno-omit-frame-pointer
+-fno-stack-protector
+-fno-common
+-fopenmp
+-msse2
+-fpic
+-Wall
+-Wextra
+-Wno-strict-aliasing
+-Wno-char-subscripts
+-Wno-format-truncation
+-Wno-gnu-alignof-expression
+-fno-gnu89-inline
+-Wno-cast-function-type
+
+/home/anton/development/dart-tarantool-storage/src/box/errcode.h