dalvik: use memmove_words for word atomic memmove

use memmove_words for word atomic memmove

Change-Id: Ife31c217f7038f5054969b4bbe1108b351881b3b
Dalvik :Increase the upper limit check for DexOpt Deps table

Increasing upper limit check for the Deps table as additonal
jars added causes the dalvik to crash while performing dexopt
on cached jar files. This is needed for passing cts test case
which is part of libcore.java.util.jar.DalvikExecTest class

Change-Id: I6d8d79be2f400585fb89382b1923f2a0494b4393
CR:681070