[analyzer] Correct the c++-analyzer symlink

As Matt pointed out, this should be just a link to 'ccc-analyzer'.

llvm-svn: 147661

diff --git a/clang/tools/scan-build/c++-analyzer b/clang/tools/scan-build/c++-analyzer
index e3eaf1f..ca10bf5 120000 (symlink)
--- a/clang/tools/scan-build/c++-analyzer
+++ b/clang/tools/scan-build/c++-analyzer
@@ -1 +1 @@
-tools/scan-build/ccc-analyzer
\ No newline at end of file
+ccc-analyzer
\ No newline at end of file