The free-block tracker search in BaseHeap::AllocRange treats
high_page_number as inclusive, shifting allocator-returned addresses
by one stride relative to the old loop-based search. Some titles
encode allocator-returned addresses in PPC code and break when that
layout shifts (Far Cry 3, Far Cry 4, Watchdogs).
In addition, reapply xe::align on the high side of AllocRange
(essentially reverting c28019e33). Without the round-up, a caller
passing a min/max window exactly the size of its request loses a
stride at the top and fails the early page_count size check.
Replace linear page_table_ scans in AllocRange with a std::map-based
free block index that tracks contiguous free regions.
Insertions now coalesce with adjacent blocks on release and AllocFixed
uses the targeted tracker for pure reserves and falls back to a full rebuild
for mixed-state commits.
Also fixing PhysicalHeap leaking parent memory on child allocation failure,
Reset() not restoring unreserved_page_count_ and some incorrect method names
in PhysicalHeap error messages
