[asan] On OS X, tag mapped regions with VM_MEMORY_ANALYSIS_TOOL tag
[asan] On OS X, tag mapped regions with VM_MEMORY_ANALYSIS_TOOL tag

This will tag all mmapped memory sanitizers use with "Performance tool data"
when viewed in vmmap. (Even though sanitizers are not performance tools, it's
the best available match and better than having the unidentified objects.)

http://reviews.llvm.org/D13609

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@251445 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt