Version 1.5.0

Fixup deps files and VERSION file on 1.5 branch

R=kasperl@google.com

Review URL: https://codereview.chromium.org//345403005

git-svn-id: http://dart.googlecode.com/svn/branches/1.5@37593 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/tools/VERSION b/tools/VERSION
index 52aa6e8..e0c196d 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -23,9 +23,9 @@
 #  * Making cherry-picks to stable channel
 #     - increase PATCH by 1
 #
-CHANNEL dev
+CHANNEL stable
 MAJOR 1
 MINOR 5
 PATCH 0
-PRERELEASE 4
-PRERELEASE_PATCH 21
+PRERELEASE 0
+PRERELEASE_PATCH 0