Missing include to <string>

[gadfort]

The lefout.h was recently modified and now fails to compile on our systems. It would appear the issue is a missing #include <string> in at the header of the file

OpenDB/include/opendb/lefout.h

Line 84 in c095760

std::unordered_map<std::string, short>& propertiesMap);

Please let me know if you need more information.

Thanks,
Peter