SERVER-10565 Have projection collect detailed stats.
SERVER-11010 For non-debug builds, build gperftools with NDEBUG to prefer the sbrk allocator
SERVER-11031 Remove irrelevant Socket::recv error message
SERVER-11010 Use Append rather than AppendUnique to fix build breakage
SERVER-10979 Fix MONGODB-X509 on Windows

StringData isn't the right type in this context. Use
std::string instead.