libutils: Fix integer overflows in VectorImpl.

Use external/safe-iop to check for overflows on arithmetic
operations.

Also remove an unnecessary copy of Vector/SharedBuffer from
codeflinger and use the copy from libutils instead.

Note that some of the unit tests are somewhat useless due to
test-runner limitations : gtest's ability to filter on abort message
doesn't work when combined with messages formatted by android's logging
system.

bug: 22953624

(cherry picked from commit c609c31fb56ae434caa2d0153cd0a2f74a715071)

Change-Id: I61644633db6b54fa230683615de9724f7fabf6fb
diff --git a/libpixelflinger/codeflinger/ARMAssembler.h b/libpixelflinger/codeflinger/ARMAssembler.h
index c03dd9a..e0c7646 100644
--- a/libpixelflinger/codeflinger/ARMAssembler.h
+++ b/libpixelflinger/codeflinger/ARMAssembler.h
@@ -21,9 +21,9 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#include "tinyutils/Vector.h"
-#include "tinyutils/KeyedVector.h"
 #include "tinyutils/smartpointer.h"
+#include "utils/Vector.h"
+#include "utils/KeyedVector.h"
 
 #include "ARMAssemblerInterface.h"
 #include "CodeCache.h"