[profile] Provide lprofGetHostName for all windows environments
[profile] Provide lprofGetHostName for all windows environments

This function doesn't use anything MSVC specific but works fine
for any _WIN32 target.

Differential Revision: https://reviews.llvm.org/D58106

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@353918 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