fixes issue 737 + suppress unaddr from strange deliberate read of   start of page containing heap allocation
fixes issue 737
+ suppress unaddr from strange deliberate read of
  start of page containing heap allocation

SVN-Revision: 716

code4bones/drmemory,sigma-random/drmemory,code4bones/drmemory,code4bones/drmemory,sigma-random/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,LohithBlaze/drmemory,code4bones/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,code4bones/drmemory,sigma-random/drmemory