Fixes issue 1408
Fixes issue 1408

Add extern "C" as well as a doxygen group to drmemory_framework.h to
ensure the version variable is not mangled.

SVN-Revision: 1664

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