Update DR to r2371 for:
Update DR to r2371 for:

+ i#1377: requires DRi#1317 == r2371
+ i#1378: requires DRi#1319 == r2370
+ i#1346: requires OP_rdrand == r2345



SVN-Revision: 1618

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