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: I13e7f4b0a5f9fe11fceb447ae3f64e8dc4ccf164
CR:697166

Conflicts:
	vm/analysis/DexPrepare.cpp
Revert "Revert "dalvik: add placeholder for future changes""

This reverts commit cd2251b84a8c15d970267b77e8116ee0b26289e0.

Change-Id: I399e390fbd1e42b935f1e4ac9d905a9d1e635e96