[analyzer] Use the new registration mechanism on some of the experimental checks. These are:

   CStringChecker
   ChrootChecker
   MallocChecker
   PthreadLockChecker
   StreamChecker
   UnreachableCodeChecker

MallocChecker creates implicit dependencies between checkers and needs to be handled differently.

llvm-svn: 125598
diff --git a/clang/test/Analysis/chroot.c b/clang/test/Analysis/chroot.c
index a0ee450..5b98a71 100644
--- a/clang/test/Analysis/chroot.c
+++ b/clang/test/Analysis/chroot.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-experimental-checks -analyzer-store region -verify %s
+// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-checker=unix.experimental.Chroot -analyzer-store region -verify %s
 
 extern int chroot(const char* path);
 extern int chdir(const char* path);