experimental.security.taint is now alpha.security.taint

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162775 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/analyzer/SATestBuild.py b/utils/analyzer/SATestBuild.py
index fd4bc8a..e28a6bd 100755
--- a/utils/analyzer/SATestBuild.py
+++ b/utils/analyzer/SATestBuild.py
@@ -72,7 +72,7 @@
 
 # The list of checkers used during analyzes.
 # Currently, consists of all the non experimental checkers.
-Checkers="experimental.security.taint,core,deadcode,security,unix,osx"
+Checkers="alpha.security.taint,core,deadcode,security,unix,osx"
 
 Verbose = 1