Increase dalvikVM heapsize

16m is simply not enough for ICS.

Change-Id: I8ce25bf7c855a3b1f385d195c12f660d8e331e34
Adjust minfree values for RAM constrained D/S

Change-Id: I793f2f933e9e91d895eb8e8ab8f7b8faa92aebbf