ART: Rename cloner_test.

Rename cloner_test to superblock_cloner_test to be
consistent with the test naming conventioni as a new
SuperblockCloner file is arriving.

Test: superblock_cloner_test.cc.
Change-Id: I066a20b4599de6c59b83676bb11295135a512791
diff --git a/compiler/Android.bp b/compiler/Android.bp
index fc19b54..164f9c1 100644
--- a/compiler/Android.bp
+++ b/compiler/Android.bp
@@ -318,7 +318,7 @@
         "linker/linker_patch_test.cc",
         "linker/output_stream_test.cc",
         "optimizing/bounds_check_elimination_test.cc",
-        "optimizing/cloner_test.cc",
+        "optimizing/superblock_cloner_test.cc",
         "optimizing/data_type_test.cc",
         "optimizing/dominator_test.cc",
         "optimizing/find_loops_test.cc",