8185757: QuickSort array size should be size_t
Summary: Changed array size type, propogate effects.
Reviewed-by: tschatzl, coleenp

8147012: Fix includes in internalVMTests.cpp
Reviewed-by: stefank, mgerdin

7121373: Clean up CollectedHeap::is_in
Summary: Fixed G1CollectedHeap::is_in, added tests, cleaned up comments and made Space::is_in pure virtual.
Reviewed-by: brutisso, tonyp, jcoomes

7016112: CMS: crash during promotion testing
Summary: Also reviewed by mikael.gerdin@oracle.com; stdlib:qsort() does byte-by-byte swapping on Windows. This leads to pointer shearing. Fix is to implement a quicksort that does full pointer updates.
Reviewed-by: never, coleenp, ysr