Fix build script for *.pdb and empty directory issues.
Fix build script for *.pdb and empty directory issues.

modulexcite/msgpack-cli,msgpack/msgpack-cli,undeadlabs/msgpack-cli,undeadlabs/msgpack-cli,scopely/msgpack-cli,scopely/msgpack-cli,msgpack/msgpack-cli,modulexcite/msgpack-cli