fixes issue 434 + increase alloc gencode to 2 pages, and change prot on whole region   to avoid boundary crossing problems
fixes issue 434
+ increase alloc gencode to 2 pages, and change prot on whole region
  to avoid boundary crossing problems

SVN-Revision: 329

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