[analyzer] Move the DeadStores checker out of the 'core' package.

-Now it gets enabled with '-analyzer-checker=DeadStores'.
-The driver passes the above flag by default.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126612 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index ef869f1..43ff90d 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -941,6 +941,8 @@
       if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple)
         CmdArgs.push_back("-analyzer-checker=macosx");
 
+      CmdArgs.push_back("-analyzer-checker=DeadStores");
+
       // Checks to perform for Objective-C/Objective-C++.
       if (types::isObjC(InputType)) {
         // Enable all checkers in 'cocoa' package.