aligning heap_end_ptr to 4-bit boundry before gpu launch
53/72 test pass

failing tests:
  StrictMathTest
  ArrayListTest
  LinkedListTest
  HashSetTest
  TreeSetTest
  LinkedHashSetTest
  HashMapTest
  TreeMapTest
  LinkedHashMapTest
  RegularExpressionTest
  DoubleToStringTest
  FloatToStringTest
  ArrayCloneTest
  ArraysSortComparatorTest
  ExceptionBasicTest
  AtomicLongTest
  WhileTrueTest
  DotClassTest
  BarrierTest
Merge branch 'master' of github.com:pcpratts/rootbeer1