storage/heap/ha_heap.h:
  Rename: sql/ha_heap.h -> storage/heap/ha_heap.h
libmysqld/Makefile.am:
  Heap changes
sql/CMakeLists.txt:
  Removed ha_heap
sql/Makefile.am:
  Removed heap
sql/handler.cc:
  Removed unneeded include call
storage/heap/Makefile.am:
  Adjusted heap Makefile.am to include ha_heap.cc
storage/heap/ha_heap.cc:
  Added plugin header