fixes issue 726 + fix symbol search bug with -no_use_symcache
fixes issue 726
+ fix symbol search bug with -no_use_symcache

git-svn-id: fe3cd4388a6e5a968b09397a3d721fe124e8117a@689 5b54908e-ead4-fc18-b48a-0285e6dbc711

rnk/drmemory,rnk/drmemory,rnk/drmemory,rnk/drmemory