only safe_read retaddr in hook callee if -conservative
only safe_read retaddr in hook callee if -conservative

SVN-Revision: 667

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